Mewtwo (F) vs. Umbreon (M)

Sure, she was a powerful opponent, but it should have been a fair fight with the type advantage.

Should have been.

The Umbreon let out another agonized squeak as an Iron Tail crashed up between his legs, flattening his spunkmakers to a fraction of their usual plumpness. The force of the blow lifted him up onto his toes, the bulk of his body weight resting on the poor, poor orbs between his legs until the female withdrew her tail and let him crumple to the ground.

"Oh god," he moaned, clutching his swollen basket in his paws. He'd given up any chance of winning the match – now the goal was just to survive with his testicles intact. "My balls!"

"Honestly," she asked, sounding almost bored, "you're a male and a Dark-type. Did you think I wouldn't learn Low Kick?"

He opened his mouth to reply, but by then she'd slammed Low Kick #3 into his crotch, and his balls were in his throat again. 

Arcanine (F) vs. Houndoom (M)

Her arms were wrapped around him: her bare breasts pressed against his back, one paw running through his chestfur and the other gently encircling his balls. The Houndoom trembled in her embrace, cock twitching with arousal. It could easily have been the hottest moment of his life – if not for the fact that the Arcanine had spent the past fifteen minutes trying to crush his nuts into peanut butter.

“Go ahead,” she had crooned. “I’ll let you finish.”

And so the male was stroking himself off, despite the crowd of thousands watching them both; trying not to think about how this might be his last chance to orgasm. If she decided to squeeze...

But he was close now, oh so close. In a few seconds–...well, in a few seconds he’d probably have a sac full of mush, but if he was lucky, he’d get to blow his load first. One last blast of spunk. Maybe they’d even scrape some up; the Houndoom could still have pups.

His breath grew shallower, his length like a bar of iron in his paw. To his immense relief, the Arcanine withdrew the paw around his balls, pulling at his chest, her breath hot on his ear. To his immense surprise, she slid her paw downwards again, grabbing his cock roughly, beating him off like a woman possessed. That was all it took. His lips parted in an orgasmic cry–

–and her knee slammed into his groin, popping his left nut like a grape.

By the time her knee came up again and turned his other gonad to goo, the poor Houndoom had already passed out. And so he was unable to enjoy it when, a moment later, he finally exploded into his opponent’s paw...and unable to stop it as the Arcanine licked his unborn children off her fingers.

Dragonite (F) vs. Aggron (M)

“Holy shit!” screeched the Aggron.

“Huh? You see?” The Dragonite had her arms folded across her bare breasts, scowling down at the steel-type on the ground beneath her. Her foot was planted firmly on his swollen plums, the twin spheres bulging out beneath her massive weight like a pair of balloons about to pop. “You should be resistant to an attack like Outrage, and yet here you are, squealing like a Tepig from a few stomps to the groin.”

“My nuts–!” the Aggron wailed, clutching at her leg.

“Do you get it? ‘Balls of steel’ aren’t really an advantage because they’re still balls.” She shifted her weight forward for emphasis, her opponent’s testicles somehow flattening even further under the tremendous pressure. “And if you swing them in some girl’s face like that, you can expect them to get stomped!”

“Oh Arceus!” the male shrieked, scrabbling even more frantically at the female’s calf as she bore down on his tortured stones.

“Understood?” the Dragonite asked threateningly.

“Oh please yes please PLEASE–”

The Aggron gasped in sudden relief as the female lifted her foot, his gonads reinflating to some approximation of their usual round shape – only to be crushed once more by a vicious Dragon Tail. The male let out a thin high squeal as her tail came crashing down once, twice, thrice between his legs, each time pounding his manhood to the very edge of rupture.

She paused after four, then shrugged. “One more for good measure.”

It was impossible to hear over the mighty thud of the female’s tail striking the ground, but both combatants felt the tiny pop. 

The Dragonite’s eyes widened ever so slightly in surprise. “You see?” she growled. “Even more fragile than I thought.”

Lopunny (F) vs. Lucario (M)

She was a stunner alright – tall and leggy, exactly what he’d always liked in her species. Awesome tits, too. And the type advantage meant that it would be an easy battle – a chance to rub elbows (and other parts, hopefully) before he knocked her out.

Of course, that was before she’d punted his balls into his throat a dozen times. Now he was beginning to wonder how he had ever found a Lopunny’s legs sexy.

“Please,” the Lucario gasped, but it was no use: yet another Low Kick came slamming into his groin, his gonads squishing between the female’s toes in an attempt to avoid the brutal impact. The male squealed in agony, twitching on the ground as another wave of nausea exploded forth from his spunkmakers.

The steel-type had long ago stopped trying to counter-attack – now he just tried to curl into the fetal position and protect himself from any more ball-breaking blows. But the Lopunny just grabbed him by the ankles, spread his legs wide, and kept kicking.

“Please–!”

“Shut up and take it like a man,” she growled, delivering another kick for emphasis, “while you still can.”

He was already beyond saving. He had to be. And yet it still came as a surprise when it finally happened.

Splut.

The Lucario’s squeal jumped an octave as his right egg burst, its contents utterly scrambled by the force of the female’s kick. The pain in his groin doubled – something he would have thought impossible a moment earlier.

He looked up in time to see the Lopunny grinning, cocking her leg back for another blow.

Thud.

Thud.

Th-splut.

Alakazam (F) vs. Scyther (M)

Thunk. It was such a small, quiet impact that you might have missed it if not for the Scyther’s reaction.

“Fuck!” the male groaned, doubling over as another wave of nutpain echoed through his gut. It was getting worse with each hit – his testicles felt bruised. He spun to knock aside the implement behind him, but the floating spoon was already gone. “You can’t...this isn’t fair!”

“Oh can’t I?” The Alakazam side-stepped as the bug swiped at her, his arm-blades hitting nothing but air. Her spoon floated casually back into her hand. “You seemed to be enjoying it a minute ago.”

“That was...oh...that was different,” he complained, struggling to maintain focus. “You...nngh...nggha...”

The female was sticking her tongue out at him – which was appropriate, given what she was doing to his cock. The Scyther could have sworn someone was sucking him off, but all that surrounded his maleness was a cool blue glow. His legs trembled as the psychic force caressed his member, the pink length throbbing needfully in the open air.

And then her spoon was back, striking his right nut with a thud that sent his ballbag swinging. “Gah! You bitch!” he spat, fighting the urge to crumple to his knees.

Her teasing smile turned into a icy frown. “Well if you wanted me to be mean, you just had to ask.”

Before the male knew what was happening, his legs had been yanked apart by a strong psychic pull, and the Alakazam’s foot was buried in his groin.