Describe Gadget Hackwrench:
(1989) Small, cute, and fuzzy. The little mouse is an amazing tinkerer, her tiny hands and tools able to put together, or disassemble, any machine. She is prone to gaining weight, and has an insatiable sex drive.
(1990) She's a cute, spunky, female mouse who loves a challenge and hates to lose. She can be very sweet, especially when horny. But she has a fiery temper when she's not sexually satisfied, and this causes her to grow and gain weight faster. 
(1991) Gadget is very friendly, cheerful and full of optimism. She's always ready to take on a new challenge. Able to make things most wouldn't even think possible, and has the ability to make things no one has ever thought of. Gadget can get quite carried away, and is easily distracted. Her body has continued to increase in sensitivity and fertility, and she almost always sports a prominent plump belly.
(1992) Gadget is a kind, intelligent, and beautiful young mouse. Her body and mind continue to become more fertile and sensitive; she is often drunk on her own hormones. She is still a skilled inventor, but often prefers to take the perverted role in sex. Growing her belly and becoming fatter is an enormous turn-on for her.
(1993) Gadget's brain chemistry has been altered, making her incredibly horny. Her belly and breasts are both larger, and she is still becoming fatter. She can no longer focus on inventing, but has a talent for sex. She has recently begun to develop fully functional hermaphrodite sexual organs. She often shows off her big bulge in her pants.
(1994) Gadget's sex drive has not diminished. In fact, she craves sex, and is a highly skilled lover. Her large belly and breasts are an attractive addition. Her musk and cum are addicting to others. She can grow her sheath, cock, and balls at will.
(1995) Gadget's sexual needs have grown, but so has her libido. She can now cum with minimal stimulation, and can be very submissive or dominant, depending on her mood. She enjoys her large breasts and belly, and her cock has reached massive proportions.
(1996) Gadget's sexual urges are almost too much for her to handle. Her cock is the largest she's ever had, and her balls produce an immense amount of cum. She can also grow additional arms to help satisfy her needs.
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It is now 1997, and you are Gadget's boyfriend. She lives in a nice suburban neighborhood, and your house is right next to hers. You have spent a lot of time in the past year watching over her, and helping her adjust to her new life. You have a key to her house, and let yourself in. "Hey Gadget! It's me, I'm here!"
You see Gadget sitting on the couch. "Oh! Hello! It's good to see you! Sorry I'm not really dressed, I'm just relaxing, trying to keep calm. I've had a bit of a tough day. Come sit next to me and tell me about your day!"
You sit down and tell her all about the workday. When you finish, you ask her how she is doing.
"Well... my cock was very horny all day, and I've had a few orgasms already. I haven't grown any new limbs yet today, but that might change soon."
She rubs her large breasts, and then grabs her belly and shakes it. Her belly is the perfect shape, somewhere between fat and pregnant. It has the weight and size to be used as a pillow, but not the tight skin or muscle tone.
"Do you like my belly? It's a bit different than before. It's gotten a bit bigger, and it's softer and heavier. I love the feel of it when I cum. And my boobs too! They've gotten so big!"
Gadget stands up and drops her robe, the fabric sliding down her four arms. You see that she is completely naked underneath. You can't help but stare at her massive breasts, and her belly. Her body is a work of art.
Gadget's breasts are huge, but not saggy or wrinkled. Her nipples are long, and stick out prominently from her areolas. She has several inches of cleavage, and the whole mass is topped with a layer of soft fur. Her belly is even more impressive. It is large, and soft, and hangs down a few inches. There is no visible belly button, but there is a small bulge in the center.
Gadget smiles, and grabs her gut, fondling it. "It's even bigger than last time! I can feel my womb growing full, of more of me. I think I'm knocking myself up." 
You are shocked, but also aroused. You had always wanted to see Gadget pregnant, and it looks like that dream might be coming true.
Gadget laughs, and rubs her belly, feeling the new life inside. Her fat-bellied herm daughters are growing quickly. "Oh, yes! I've always wanted to be a mother, and now I can do it all the time. This is so wonderful. I can't wait until I'm ready to give birth!"
Gadget smiles, and then sits back down. She is visibly horny, and her cock, belly, breasts and balls are starting to grow. Her cock is hard, and her balls are swollen. Her belly and breasts are slowly getting bigger.
"I know you're watching me, and I know you're enjoying the show. I can smell your lust, and see your arousal. Would you like to breed one of my unborn clone daughters?"
You nod, and Gadget smiles.
"Well, let's see which one is ready."
Gadget closes her eyes, and seems to concentrate. Then, her belly moves, and the bulge in the center shifts. You hear a muffled voice coming from inside her.
"Me, me! I want to be bred! I want you to fuck me and fill me up!"
Gadget laughs, and opens her eyes.
"This one is a little impatient, and I know she'll make a good mate. Now, come on, breed her."
Gadget turns onto her hands and knees, and you see the bulge in her belly moving down. Her ass cheeks spread, and you see a small slit open up between them.
Gadget grins, and reaches a hand back, spreading her pussy wide. "Come on, put it in, and make me a grandmother."
You are still in a state of shock, but you do as you're told. Your cock is rock hard, and you shove it into Gadget's waiting pussy. She lets out a groan, and her pussy clamps down around you. Deep inside her womb, you feel her young clone's cunt clench around your cock, too. You can barely believe this is happening, but you're loving it.
Gadget moans, and pushes back against you, urging you deeper. "Come on, cum in me, fill me and her up. We need your seed. Please, please, cum!"
Your cock twitches, and you blow your load deep into Gadget's unborn daughter. She squeals, and her cunt squeezes down around your cock, milking out every drop.
Gadget groans, and her belly swells as she takes your cum. You are both panting, and the room is filled with the scent of sex.
Gadget is sweating, and she reaches a hand back, rubbing her growing belly. "That's it, give it to me. Give me and her everything."
Her belly swells, and her cunt squirts cum all over your crotch. She is cumming, and you can see the pleasure on her face.
Gadget sighs, and her cunt stops spasming. She sits up, and pulls your cock out of her. Her belly is swollen, and her cunt is gaping. Cum is dripping out of her pussy, and she smiles.
"We've done it. She's going to be born now, and I'm sure she's going to be just like her mother. Ahh! She's coming out!"
You watch in awe as the bulge in her belly slowly rises. As it reaches her ass, the skin begins to stretch and split. Gadget gasps, and you see her clone daughter's head begin to emerge.
"Yes, yes! It's happening, it's really happening! Push, baby girl, push!"
Gadget pushes, and her daughter's head slides out. Her eyes are open, and she has a smile on her face. She pushes her shoulders and huge mouse breasts forward, and her smile gets wider and her eyes more intense. Lust and pleasure are plain on her face, and her gaze grows even more intense as her plump, fat belly and throbbing, stiff girlcock push forth next.
You can't believe it. You've seen a lot of weird things since you started dating Gadget, but this is a new one. Her clone daughter's cock is as big as hers, and the rest of her body is the same, only smaller. Gadget's clone is a perfect, mini version of her.
Gadget's clone groans, and pushes herself further out. Gadget is panting, and her clone is gasping and moaning. Her gut jiggles pregnantly as she writhes forth from her mother's pussy.
Gadget grunts, and pushes her clone the rest of the way out. Her clone's cock pops out first, and then the rest of her.
Gadget's clone is covered in sweat, and she is gasping and moaning. Gadget looks exhausted, and is panting.
Gadget's clone looks up, and her gaze locks onto yours. You feel your cock twitch, and a shiver runs down your spine. Gadget's clone's eyes are just like hers, and the lust and hunger are just as strong.
Gadget's clone moans, and rubs her large, round breasts. Her cock is hard, and her cunt is wet. You can smell her lust, and see her losing sanity. She wants you, and you want her.
Gadget's clone moans again, and rubs her tits harder. You feel your cock get even harder, and the urge to fuck is almost overwhelming.
"Mama... Mama... Fuck me, please. Fuck me and breed me. I want you, I need you."
Gadget smiles, and nods. She lifts her clone's legs, and spreads her cunt open. Their fat bellies press together, both growing larger.
"Of course, my little girl. Of course I'll fuck you. Let me take care of you, and breed you."
Gadget leans forward, and kisses her clone on the lips. Her clone's eyes close, and her moans turn to squeaks. Gadget's clone is lost in pleasure, and her mind is gone. You can see her growing a second head as her mother fucks her.
Gadget continues kissing her daughter, and thrusting into her. Their bodies are slick with sweat, and their moans and squeaks fill the air. Their bellies are both getting bigger, and their cocks are twitching and leaking precum.
You are transfixed, and can't look away. Gadget's clone's belly is growing faster, and her body is trembling. She has two heads now, and twice as many hormones. She is losing her sanity fast, and her moans are turning to squeals.
Gadget's clone shudders, and her cunt starts convulsing. Her body goes rigid, and her cock twitches and spurts cum. Gadget moans, and her belly expands.
You are transfixed by the scene, and your cock is twitching and leaking precum. You can't resist any longer, and you start jerking off. Another two-headed clone of Gadget sits next to you and also starts jerking off both of her pretty pink dicks. You feel an even younger herm Gadget pull you into her lap and slide her cock deep into your ass. You are so caught up in the moment that you don't even care about the new mice. You are too focused on the sight in front of you.
Gadget's clone's eyes open, and her moans turn to squeaks. Gadget smiles, and kisses her again. Their cocks are throbbing and leaking, and their bellies are swollen. Gadget's clone is gasping and trembling, and her orgasm is intense.
Gadget's clone shudders, and her cunt starts convulsing. Gadget's cunt does the same, and their moans and squeals blend together. More Gadget clones start to push forth from their pussies, even hornier than their parents. You watch as a ten-year-old Gadget climbs into your lap and pushes her pussy over your cock, until your balls bump against her heavy mouse nuts.
Your balls twitch, and you can't hold back anymore. You start cumming, and you feel your seed flowing into the eager preteen Gadget. She squeals, and her cunt squeezes around your cock. The Gadget with her cock deep inside of you begins to fill your belly with her cum, too. Your own orgasm intensifies, and your vision goes white.
As the world comes back into focus, you see a crowd of Gadget clones standing around you, stroking their hard cocks and staring at you. Some have three heads, others have four, and some have even more. They are all identical, and all horny.
You are overwhelmed, and can't believe how lucky you are. Your cock is still hard, and the young, naked Gadget on your lap is still cumming. Her eyes are glazed over, and her belly is expanding as she takes your load.
The crowd of Gadget clones closes in, and you lose count of how many hands are on you. A dozen or more mouths are kissing and licking you, and cocks are pushing into you. You are surrounded by warm, soft bodies, and you lose yourself in the pleasure.
You don't know how long it lasts, but eventually the pleasure becomes too much, and you pass out.
You wake up in Gadget's arms. She is holding you, and kissing your face. Her breasts are pressed against your chest, and her belly is against your stomach.
"Did you have a nice nap? I've been feeding you for a few hours, and you seem to be doing well. You are one horny mouse."
You can feel her cock pressed against your ass, and you can smell her musk. You are still in a daze, and your body is still sore from being fucked and bred.
"Gadget... How many..."
"Oh, a few hundred. My womb can't produce them any faster than that, though. Don't worry, there's plenty more where they came from. I'm going to keep you nice and full, and keep making you cum."
You are speechless, and can't even begin to comprehend what just happened. Your cock is still hard, and your balls are still full. Gadget's musk is intoxicating, and you can't resist her.
"Don't worry, we can talk later. For now, let's enjoy ourselves."
She leans forward, and kisses you. Her cock slides into your ass, and you lose yourself in the pleasure. You forget all about your troubles, and your worries. All you can think about is Gadget, and her clones. You are completely at her mercy, and you don't want it any other way.
Gadget's musk is addictive, and her clones are everywhere. 
***
Judy Hopps, a bunny, finds a Gadget in her bed when she wakes up. Gadget is a mouse, and she's a cute and chubby, with a short pink dress and a big belly.
"What... How did you get here?" Judy asks.
Gadget's face lights up. "Oh, I'm so glad you're awake! I'm Gadget, and I've come to help you with your fertility problem. Smell my musk!"
Judy takes a sniff of Gadget's musk, and her nose starts twitching. She can feel her body responding, and her nipples stiffen. Her pussy gets wet, and her clit throbs. A huge sheath, cock and balls grows on her lap.
"Wow," says Judy, looking down at her new equipment.
Gadget's mouth is practically watering. She climbs on top of Judy and straddles her waist.
"I'm so glad you like my musk. Now, let's see if we can get you pregnant."
Gadget slides her pussy over Judy's huge cock, and starts bouncing up and down. Judy moans, and her cock twitches.
"Oh, fuck," she gasps. "That feels amazing."
Gadget is having the time of her life. She loves being filled up, and she loves making others cum. She's a natural-born breeder, and she loves every second of it. As she bounces atop Judy's cock, her head splits into two heads, and her breasts double in size and number.
"Oh, fuck," says Judy. "You're so tight."
"And you're so big," says one of Gadget's heads.
"I can't believe how good it feels," says the other.
Gadget's clit swells, and her balls swell too. Her body is getting ready to cum, and so is Judy's.
"Fuck," says Judy. "I'm gonna cum."
"Me too," says one of Gadget's heads.
"Same here," says the other.
The room fills with the sounds of sex, and the smells of musk and cum. Nick Wilde can smell the powerful scents on the other side of Judy's apartment door, and before he knows it, he has a second head too. He's never smelled anything so arousing, and his cock and balls are huge.
"Judy!" he calls out, as he enters the apartment.
"Oh, Nick," says Judy. "Come join us. I need your help."
Nick walks into the bedroom, and sees Judy and Gadget fucking. He can't believe his four eyes, and his cock is rock hard.
"What's going on?" he asks.
"I'm helping Judy with her fertility problem," says Gadget.
"Her what?"
"My bunny-ness is broken," says Judy. "I can't get pregnant. But Gadget can fix that. Can't you, Gadget?"
"Yes, I can," says one of Gadget's heads.
"Let's give him a show," says the other.
One of the Gadget's mouths wraps around one of Judy's nipples, and the other one does the same. Their tongues flick across Judy's nipples, and Judy moans.
"Oh, fuck," she says.
"That's it," says one of the Gadget's mouths. "Moan for us."
"Moan while I suck your nipples," says the other.
Judy's moans grow louder, and her body shakes. Nick is transfixed, and can't look away. He can feel his body responding, and his cock and balls are growing.
Gadget's clit is throbbing, and her cunt is quivering. She can't hold back any longer, and her body explodes in pleasure.
"Oh, fuck!" she screams, as her body convulses.
Judy's cock explodes, and her cum fills Gadget's pussy. Gadget's body quivers, and her clit throbs. Judy's eyes roll back in her head, and her body shakes.
"Fuck," she moans. "That was amazing."