"That was some nice fighting, runt."

"Yeah, but I would have preferred real enemies. This arena's nice and all but it's just a simulation. How am I supposed to prove my strength against puny computer thingies?"

"You held of an entire army of Rachni on your own and only got some scratches. You killed a Thresher Maw during your rite. No Krogan has done that since my time. And that was 1.000 years ago. I may keep teasing you but everyone knows that Urdnot Grunt is the strongest Krogan in centuries."

"Come on, Wrex, now you're just trying too hard", the young Krogan was seriously flattered but he couldn't admit that so he answered with a sarcastic tone.

"No, I'm serious. That thing about you replacing me wasn't just some joke. You've got what it takes be a leader. That's why I chose you for Aralakh company."

"And I'm still thankful for your trust. But no one can replace you, Wrex. Our people need you, even the brainless Bloodpack has realized that."

"Those pyjaks are just following me because you and Shepard killed all of their leaders. Quadless whimps. Now let's get out of our armor and into something comfortable for Shepard's party."

"Yeah", said Grunt, slightly hesitating. As a tankbred he never really understood the fascination male Krogan seemed to have for their quad. He knew about the "birds and the bees" as Mordin had awkwardly put it, Okeer made sure of that. Damn, that talk was so embarassing. He had liked Mordin but a squishy Salarian trying to explain those things just wasn't right. Grunt barely kept himself from going into blood rage while the Salarian rapidfired weird questions. Thankfully Tali burst in, almost crying because she had once again ruptured her suit or something like that. Yeah, he felt bad for her, but she had saved him from that really uncomfortable situation.

Grunt took of his armor and didn't really pay attention to what Wrex was doing. Until he stood there naked and heard Wrex's deep voice.

"Damn, kid. That's a mighty package you got there. Haven't seen a quad that big in a long time."

"What?" Grunt was flabbergastered. Had the legendary Urdnot Wrex really just checked out and complimented his balls? "Nah, they're allright but I'm sure most males are bigger than me." Honestly he had never seen another Krogan's quad so he wasn't entirely sure about that. Clearly Wrex had to be joking. Tell the new kid he's well hung so he feels manly, even if said kid's just of average size.

"Oh, I see. The tankbred doesn't know his own size because he never really had anyone to compare. Am I right?"

"Well..."

"No need to be embarassed. Trust me, kid, I've seen enough quads. And yours puts most of them to shame."

"Thanks, Wrex. I guess, I'm pure Krogan everywhere". Grunt still wasn't convinced and tried to hide that with a small chuckle.

"That you are, my boy. Okeer may have been a madman but at least he gave you a really nice body and one damn fine package."

"Could we please change the topic, this is getting a bit... weird." Grunt was a very good fighter but his training didn't really prepare him for social interaction. Especially if the topic was this "delicate."

"Why? Nothing wrong with a bit of man-to-man talk. Since Okeer died you never had a father to show you the ropes. Shepard's crew is nice enough but they're no Krogan."

"Yeah. So?"

"My father was an asshole but at least he did show me a thing or two before he went insane. I'd like to do the same for you." Wrex winked and Grunt just stared open-mouthed.

"What?" Grunt couldn't help but shout. Wrex couldn't seriously be suggesting what he was thinking.

"Come on, just two men bonding and relieving some stress together."

"I thought you got more than enough 'relief' since Mordin cured the genophage."

"Kid, I'm man enough to handle you AND still fuck our horny females. You're the one who doubts his own manliness."

"OK, fine. You got me. Everyone who looks at me sees this big fighter. And that's what I am. I am big and I am a damn good fighter. But I was just born with an adult body and I guess I never really got used to some aspects of that."

"So you never fucked and never jerked off either", Wrex deadpanned.

"What?"

"Admit it, boy."

Grunt just stared at Wrex in shock. He couldn't say anything.

"Stop staring at my face. You look like an Asari who's about to die. Urdnot Grunt – fighting the biggest enemies without the slightest bit of effort. Ask him for a bit of manly fun and he crumbles completely. So your cock has never been used. That's nothing to be ashamed of. You're still a boy who has to learn stuff."

Grunt was still unsure about the whole situation but now Wrex had attacked his pride. He would show the Krogan leader that he was man enough. Nobody would know about this stuff anyway and, if he was completely honest, he really might need a bit of "fatherly" advice.

"Enough!", he shouted. His deep voice echoing through the locker room. Then he quietly added: "What do you have in mind?"

"Well, you're already naked, so let me take off my armor." With another wink Wrex added: "You're free to watch. I've already seen yours, now you'll learn what a natural Krogan looks like."

Grunt would never have dared to ogle the Clan chief but he wouldn't pass on this invitation, so he watched Wrex strip out of his armor. He knew that the older Krogan was huge, that much was obvious to anyone. He was clearly extremely muscular but his advanced age had given him just the slightest bit of padding. Grunt knew that Wrex hated being teased about this. And no Krogan would dare to do so and expect to survive the aftermath. Maybe except for Bakara. Tali had only gotten away with it once because Wrex deeply cared about her in an almost (grand-)fatherly way. Shepard might have survived a joke about it. Anyone else would be dead meat.

Then finally Wrex's cock and quad came into view. And Grunt was really surprised that they both seemed to be more or less evenly matched in that department. Grunt had always thought of his own package to be average. Even after their talk some moments ago. But it was simply impossible for Urdnot Wrex to be average in any way. So...

"Admiring the view?", Wrex said, sensing Grunt's thoughts. "I wasn't joking when I said that your junk is big. Because I KNOW big. Many Krogan would kill to be as hung as either one of us. Weyrloc Guld? Even if he packed all of his blood into his cock he was only half as big as this beauty", Wrex said hefting his long and very fat cock. "Gatatog Uvenk? I was bigger than him when I was just a child. No wonder he was so pissed all the time."

"Wait, why do you know how big those guys are?"

"Well, as a Clan leader I have my own method of dealing with politics", Wrex said with a big grin.

Once again Grunt could only stare.

"I fucked them into submission. It's a really effective way to silence your opponents. You get to have fun, they're embarassed and you could even blackmail them if they might get some funny ideas", Wrex stated proudly.

"But you're Urdnot Wrex. You can't be gay!", Grunt shouted. He couldn't believe what he just heard. Homosexuality wasn't outlawed on Tuchanka but since the genophage had reduced the birth-rate so extremely it wasn't really accepted either. There was an unspoken law that every Krogan should at least try to prevent the species from going extinct. And that didn't work if you fucked someone of your own sex.

"You really are just a child. Gay, straight – what does it matter? I just like to fuck. I don't care if someone has a cunt or a cock and neither should you. I LOVE to fight but the real fun starts once someone's impaled on this fat thing here." Once again he groped his fleshy tube.

"I can't believe that you fucked Uvenk", Grunt said while shaking his head in utter confusion.

"That pyjak wouldn't stop screaming while I showed him the 'strength' of clan Urdnot. So I had Wreav shut him up."

"You both..."

"Yep."

"Damn."

"You're still stalling, boy. I could tell you many tales of my sexual adventures. Trust me, I have a lot of them. But I'd rather see what that cock of your looks like when it's all happy."

"I... but... I", Grunt could only stammer.

"Here, lemme help", Wrex said and suddenly Grunt found himself surrounded by blue energy. He couldn't move. He couldn't speak. The proud warrior once again found himself reduced to primal fear within the span of a few minutes. He was completely at Wrex's mercy and he still didn't really believe all those things the older Krogan had just told him.

"Neat trick, huh? Liara taught me how to use stasis fields. People seem to forget that I'm not only the biggest and the baddest but a biotic as well. Now, let's have a look at you", Wrex said while taking Grunt's cock into his calloused hands. "Damn fine piece of meat."

Wrex started stroking Grunt. "Yes, really fine. Can't wait to see who's bigger. Think yours can beat me?"

Grunt couldn't believe it. Urdnot Wrex was manhandling his dick. He focussed on not getting hard but Wrex's rough hands did wonders to his inexperienced member. Wrex was his hero, his role-model, he deeply cared about him. But he couldn't get hard, his first time was supposed to be with a female.

"Stop fighting it, boy. Show me what Okeer blessed you with. Although..." Wrex started grinning. "No. Keep fighting. I love being challenged. I'll win anyway but I want to earn this victory."

Since he was still trapped in the stasis buble Grunt could only watch as Wrex got down onto his knees. Then he felt something wet on his balls. Wrex vigorously licked Grunt's enormous nuts.

"That feel good? I'm gonna drain these babies of every last drop of cum you ever built up." Grunt hated to admit it but Wrex's tongue felt amazing. And that constant dirty talk kinda seemed to turn him on. Damn, Wrex was really good at this stuff. Grunt began to wonder if he should have tried out this whole sex thing earlier.

But something always held him back. That information he had was purely clinical. He never really got what should be so great about it. Also there had never been any time. Once Shepard freed him from his tank she took him along to almost any mission. Such a big crew and most of them never even got to see any action.

FUCK! Wrex seemed to work magic on his quad. Anyway, Shepard seemed to trust him, to rely on him. And so he always gave his all. He got along with his crew but he preferred to be alone. Okeer seemed to have implanted him with quite a bit of xenophobia towards other species. It took some time to overcome these barriers.

OOH! Wrex must have hit some specially sensitive spot that got his balls boiling. Can't. Give. In. Yeah, he still didn't like most Turians, but he'd fight along with Garrus anytime. And because of that new primarch he might even have a chance of becoming a father, something most Krogan could only faintly dream of for centuries. But right now it really felt as if Wrex would suck out all the content of his four balls. Not much luck siring any children once your quad has been drained.

Grunt only felt his cock entering Wrex's mouth before he dared to look down. Urdnot Wrex was sucking his dick and it felt... it felt... his vocabulary, which Grunt had been constantly improving since his first stilted conversations with Shepard, completely failed him. No words he could think of even came close to describing this whole new sensation.

Wrex smirked. After giving Grunt's quad an extensive tongue-bath he finally decided to suck on his fat cock. Until now the young Krogan had kept himself from getting hard. A damn impressive feat. Most other Krogan would have already blown their load. But then again most other Krogan were no match for Grunt anyway. He was really curious to see how big Grunt would grow. Maybe the kid's dick was even bigger than his own. Okeer really seemed to have dedicated a lot of his time to make sure that this boy was impressively hung.

The fleshy tube finally started to firm and lengthen while he tasted Grunt's manly musk. Nice. It kept growing and growing. This boy had a beast of a cock and yet had thought of himself as being nothing more than average. Still growing. Damn, he really might have me beat. Wrex just had to know for sure and set his omni-tool up to measure both their dicks. Haven't sucked on a piece this big since my father showed me his. Along with Grunt's cock a thought in his head kept growing. No, that couldn't be. Or could it?

Wrex felt a pair of strong hands on his head. Oops, he must have lost control over the stasis bubble. But by the way Grunt now started ramming his huge member into Wrex's mouth he finally seemed to have gotten into the fun. Thanks, ancestors, can't believe it took him this long. Let's see what the boy can do with that mighty tool of his. And how long he will last.

Instinct had taken over Grunt's mind. He just had to fuck. And somehow he had regained control over his body again. No mercy. He would wreck Wrex with all of his strength. Show him who was the biggest Krogan. Yeah, choke on it. You wanted to see it, now you'll have to deal with the demon you unleashed. Next time you'll think twice about challenging Urdnot Grunt.

Wrex loved every minute of it. Finally a Krogan who knew how to fuck even if it was his first time. Which meant that with experience he'd only get even better. And Wrex would gladly show him a trick or two. Hm, tricks... might as well demonstrate one. Wrex applied some omni-gel to his right hand and started rubbing Grunt's pucker with one of his fingers.

"What you doin'?", Grunt grunted, slightly irritated. But he just kept fucking Wrex's mouth.

Boy, you will know soon enough. Slowly Wrex started inserting one of his thick fingers into Grunt's hole. Tight. But there was less resistance than he would have expected. Soon Wrex started deeply finger-fucking Grunt. And the kid seemed to like it. Very much so.

Grunt didn't know what Wrex was doing to his ass but the clan chief seemed to always hit one spot that sent incredible feelings through his whole body. He had to slow down his relentless assault on Wrex's mouth. Although he had never experienced an orgasm before he somehow just knew that he was close to his first one. And he didn't want it to end already.

Wrex was slurping down the sheer flood of precum that the younger Krogan's enormous dick kept pumping down his throat. The pup made his own lube. Plenty of it. And it was pretty obvious that he wouldn't last much longer. Wrex felt proud, he really wanted to give this boy... his boy... his first orgasm. Time to speed things up. Wrex focussed just a bit of biotic energy and hit Grunt's prostate with it.

Grunt roared deafeningly as he was overcome by his first orgasm. His huge, fat cock pumped gallons of boiling hot seed into Wrex's eager mouth. Soon he pulled out and coated Wrex's face, some cum pooling in the biggest crack across his red headcrest.

Then Grunt's legs gave way and only Wrex's fast reaction kept him from falling. Holding the younger Krogan he asked: "Well, my boy, how was your first orgasm?"

"It... *huff*... it was... *huff* amazing."

"Sounds like I really did a number on you. Try to catch your breath. You'll need it", Wrex said smirking.

"W-what for?" Grunt still tried to regain his stamina.

"For fucking me, of course."

"I... but... I", Grunt stammered.

"Again? Seriously? I'm not going to use stasis again. Just be a man and fuck me. You're thinking way too hard about simple things."

"But what if I hurt you?", Grunt asked, sounding genuinely concerned.

"You? Hurting me? A puny runt like you couldn't even hurt a baby pyjak."

"What happened to me being bigger than all those other guys?"

"Then finally start acting like it!" Wrex grasped his own very hard member and shook it. "You see this? This was the biggest cock I've ever seen. Until today. Don't believe me? I had my omni-tool analyze it. You're bigger than me. Not by a lot, but I'll gladly admit that you, Urdnot Grunt, are the biggest Krogan around. And still you're acting like a small child. Prove your size. Prove that you are bigger than me."

"OK, I'll do it!"

"Good boy."

"How... should I start? I'm sorry... Okeer gave me basic ideas but I'm still new to this."

"You're young and inexperienced. Already told you that it's no big deal. Do you think I knew anything when my father first taught me what fucking's all about? Hell, no. It was weird. It was scary. And it was simply amazing."

"You fucked your father?"

"Yep. Seems to be a bit of a family tradition. We double teamed Wreav on his first time."

"And now you want me to be a part of this tradition. Why?" Grunt sensed that Wrex was hiding something from him.

"Well, I never told you but there is a possibility that I might be, at least partially, your father."

"What? How?" Urdnot Wrex, his father? He could hardly believe what had happened today but that seemed really farfetched. Wrex couldn't mean that literally.

"Well, Okeer asked me for DNA samples for his research. He wanted the best genetics for his experiments and after what happened on Virmire he considered me one of the best Krogan." Wrex sighed. "I guess, I'm still lucky that I listened to Shepard back then. It pays to use your brain once in a while. Okeer contacted me and at first I was skeptical. I had already turned down that creepy Salarian, Maelon."

"I remember that guy. Even more squishy than regular Salarians. Mordin wanted to shoot him for butchering those females. Shepard stopped him. Last I heard he's running a clinic on Omega."

"Yeah, Shepard always seems to have a positive effect on people. And because of her we cured the genophage. But back to Okeer: As I said, I was skeptical to give him my DNA. Then I decided to take a chance. On Virmire I shot another Krogan who was trying to undo what the Turians and Salarians did to us. Would have preferred to talk with the guy. So I agreed and he received my DNA. Lots of it."

"Do I even wanna know what he used as DNA samples?"

"Cum. I filled dozens of jars with it. Jerking off for the future of the Krogan. Now, if that doesn't sound like something you'd write on a banner", Wrex said chuckling. "Okeer promised to use it well. I still don't know if he ever did. But if he did, I'd like to think that some of it helped to create you."

"I... I don't really know what to say. You know that I respect you more than any Krogan. Do you think there is a way to prove that I indeed am the son of Urdnot Wrex, the legendary Battlemaster who gave his entire race a new future?"

"When all of this is over and Padok Wiks is still around, I guess he might know how to find out. He's no Mordin but he's a clever little pyjak and the only Salarian I'd trust with this task."

"Then we have another good reason to win this war."

"Can't think of a better one, my son. Could we fuck now?"

"Yeah, dad. Let's keep our family's 'tradition' alive."

"Dad, huh? I think I might like that." Wrex got down on all fours and spread his cheeks. "Now show daddy dearest what you're capable of."

Grunt wiped some cum that was still left in the crack on Wrex's head onto his finger and started rubbing his tailhole. "Guess I'll start with what you did to me. Kinda liked that."

"You definitely ARE my son!", Wrex said laughing. "Yeah, push it in. Get me all nice and loose for the real thing."

Grunt wasn't sure at first but it seemed that... his father... really liked this. So he started penetrating Wrex's pucker. Damn, he was tight. But it felt good on his finger. Grunt shuddered slightly at the thought of his cock entering this hot, tight hole. That thought spurred him on and he started really fingerfucking Wrex's hole.

"Ooh, boy. That's it!"

During their conversation Grunt's cock had softened a little but now he was rock-hard again. His length kept slapping his hard abs, thoroughly coating them in his precum. "Still calling me a boy?"

"Little guy, you *hmph* haven't yet *hng* earned the title of a man. But *grr* you're getting there."

Grunt didn't know why but he just had to get a taste of Wrex's hole so he also got down on all fours and tentatively started licking the older Krogan while one hand grabbed his quad. Yeah, it wasn't proven yet, but to Grunt there was no doubt that he came from these four fat, heavy, manly nuts.

"Someone's really eager", Wrex moaned. "Lick that big butt!"

Grunt did as he was told. Licking and lapping and slurping at Wrex's surprisingly tasty hole, his pointy tongue having just the perfect shape for entering it. And sometimes he even let his tongue swipe across those impressive balls. How could he ever think of his own equally sizeable quad as being average?

"*grr* Son, you're really good at this. But I'd say we're both more than ready for the main event."

Grunt was a bit anxious and tried to mask that with some banter. "Think you can handle me, old man?"

"We'll never find out if you don't man up and just stick it in."

"OK, dad. *gulp* I know that you're tough and all but I really don't want to hurt you", Grunt said. His normally booming voice now surprisingly quiet and measured. "So, please, tell me if I'm doing anything wrong."

"I will, my son."

"OK..." Grunt said and grabbed his cock. He aimed his pointy, almost angular tip at Wrex's hole and after some insecure rubbing he finally started pushing. Hot tightness surrounded him like a vice. Grunt shuddered slightly.

"Come on, keep pushing. *hng* The head's already in. But I want to feel all of my son in me."

"Allright", Grunt grunted. He kept pushing and slowly but surely he felt his huge cock entering his father's warm body. That vice-like tunnel kept rubbing at the slight ridges and small barbs of his greyish-pink member. Once again he felt animalistic instincts clouding his mind.

"You. Want. This. Dick?" Every word was followed by a strong push of his powerful hips. "TELL! ME!" Grunt roared.

Now, were talking. Finally his son had stopped fighting his own nature and just went with the flow. "Yes! *damn* All of it! *hrg* Fuck me! Fuck your father!"

"Gonna fuck! Hard! Won't! Ever! Walk! Again!"

"Idle threats!", Wrex shouted. "I can... *ugh* barely... *ugh* feel... *hng* that little... *hrmph* stump." His son was already giving his backside quite a workout but he wanted to push the young Krogan even further.

"Stump? More like. Tree. Trunk. Gonna show you. Stump." Grunt said, huffing and puffing while he doubled his efforts of fucking his father.

"Still can. Hardly. Feel you. Come on!" But he did feel something. He did feel Grunt's massive balls smack his own quad. "Give it. To me." He did feel that his son was finally buried to the hilt inside of him. "Do! It!" He did feel powerful thrusts that would have left a lesser being all bruised and battered. "Show me! Your strength!" He did feel being almost split in half by the biggest dick that had ever entered him. "Prove! That your! A man!" And he did feel damn proud that this gigantic tool belonged to his own son. "Come on, son! Pound your daddy's hole!"

"Gonna! *hng* Fuck! *grr* Daddy! *urf* Hard!"

Wrex started to feel another sensation. Grunt was mercilessly pounding his hole, battering his prostate like a berseker. He kept fighting the inevitable but with Grunt's enormous log buried so deep inside of him and those balls slapping his own he knew that he wouldn't last much longer. This was the boy's first time and he was already rutting him harder than a varren in heat. And those fish-dogs were vicious fuckers.

Wrex felt his balls tighten. Not much longer now. "Son", he groaned huskily. "Gonna. Cum."

Grunt's sex-crazed mind only understood one word. Cum. "Will! *thrust* Show! *pound* You! *hng* I'm! *pound* BIG! *hrg* MAN!"

That was it. Those last thrusts, coupled with his son's confident words finally pushed him over the edge. Wrex roared as loud as he could while he covered the floor with this seed. Soon his son joined him, the sound of two powerful male Krogan reaching their climax drowning out all other noises. Wrex felt Grunt pumping him full of his spunk and soon it overflowed. His son's hot cum ran down his balls and coated his thighs.

Completely exhausted both Krogan collapsed on the floor. They lay their, panting. Wrex was the first one to regain his breath. "Son, I'm proud of you. You have proven that your a man. A big man. And I could use a bit less of this big man on my old back." Wrex started laughing and coughing at the same time. "Damn, you've really worn me out. Normally it takes at least five females or a whole army of enemies to do that."

While Wrex was already back to joking Grunt still tried to regain his senses. This new experience had completely blown away his mind and his strength. "Sorry, old man", Grunt huskily groaned. "Big man's still feeling a bit weak. Guess we've both worn each other out." He pushed himself off his father.

"How do you like fucking?"

"Could get used to it."

"That's all?"

"Dad, my brain's still all over the place. Give this big man one second to find his way back."

"Speaking of 'all over the place'... I guess we have to clean up this mess. Don't think Shepard would like Armax Arsenal to ask weird questions about what happened in one of her private locker rooms."

"OK. Yeah. We'll do that", Grunt answered. "But first I need a shower. A cold one."

"Son, how about we take one together?"

"But no messing around. We can do that another time."

"Promise?"

"I kinda like our 'family tradition', so, yeah, promise!"

"Good boy!"