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“There’s something wrong with Project Shadow.”The newer scientists- whether they be interns or imbeciles - make this mistake sometimes. Their feeble brains are unable to comprehend Shadow’s unique physiology, and so they chalk it up to a mistake or a problem.There is nothing wrong with Shadow. He is the Ultimate Lifeform - immortal, ageless, all-powerful. He is the pinnacle of strength, speed, and Mobian beauty standards. Truly a perfect specimen.Gerald scoffs, but Dr Tower doesn’t back down. He’s one the few scientists that isn’t afraid to speak his mind, to tell the great Professor Robotnik that he’s wrong. Gerald likes that about him, usually.“You really should see this,” Tower says.Reluctantly, Gerald abandons his notes and fresh cup of coffee to follow Tower. It’s probably nothing, certainly not worth his time, but he doesn’t argue with the man. The sooner they put this matter to rest, the sooner Gerald can go back to work. Besides, if nothing else, this will give him another opportunity to show off Shadow’s capabilities.Tower takes Gerald not to Shadow’s enclosure, but do the observation room attached to it. The room is dark, blinds pulled down over the glass wall separating them from Shadow. Gerald raises an eyebrow at Tower. What exactly is he supposed to be looking at?“I thought he might appreciate privacy,” Tower says. He presses a button on a computer. Several monitors light up, each showing a different angle of the enclosure. Privacy, indeed.The room is sparse - a hedgehog-sized bed, a treadmill so he can get exercise and a small television for when he gets bored. Shadow stands out, a single black dot in the sterile white room. He’s kneeling on the bed on all fours, a pillow shoved between his legs. As he ruts against it, the shiny red head of his cock peeks out between the pillow and his stomach. Gerald has taken extensive measurements of every inch of Shadow’s body, for purely scientific purposes. Which is how Gerald knows that Shadow’s penis and testicles are above average size for a Mobian hedgehog, a testament to his virility.There’s no sound on the monitor - Tower probably muted it for privacy - but Shadow’s mouth hangs open in a silent cry. A string of drool connects his lips to the mattress under him. With each powerful thrust, the headboard bangs against the wall. Tower looks a little green. Gerald leans forward to look closer.“Fascinating,” he breathes. “It seems as though Shadow is affected by the Mobian mating season.”Shadow has never been on Earth, never experienced the changing of seasons. Nor is he wholly Mobian, and yet, his body is attuned with its natural cycles.“It would appear so.”Tower still looks uncomfortable. His finger hovers over the button, ready to cut the feed off at a moment’s notice. This is why he’ll never get far in life. A true scientist would appreciate the significance of what’s happening in front of them.Gerald dismisses Tower, and sits in the chair to observe. Once he’s sure the man is gone, Gerald turns the sound back on. Shadow’s heavy pants and harsh grunts fill the room. The bed rocks and creaks as Shadow fucks the pillow under him hard enough to drive any female wild with pleasure. Luckily, the furniture is built to withstand his immense strength, though the pillow is not. His claws drag deep lines through the fabric, fluffy white innards spilling over his paws.It presents an interesting conundrum. Were they on Earth, Shadow would no doubt have females throwing themselves at his feet, clambering for the opportunity to mate with him. Yet, there isn’t a female alive who is his equal, who is capable of keeping up with him. Gerald sits, eyes never leaving the screens as he considers the possibilities.The mating frenzy lasts three days. During that time, Shadow destroys two more pillows. Gerald fashions a sort of artificial vagina out of spare materials, and Shadow destroys that, too. On the second day, they have to start putting food and other necessities through a slot in the door, after Shadow humps a male scientist’s leg.When his mind clears, Shadow looks over the wreckage of his bed - the destroyed pillows, the torn sheets, the semen-coated blanket. It’s not clear how much he remembers, but his muzzle flushes nearly as crimson as the stripes on his quills.“I apologize for my shameful behavior,” he says.“There’s nothing to apologize for.” Gerald pats him on the head. “It’s only natural, and I am working on a solution for next time.”Gerald’s solution is not ready for several months. He doesn’t have Black Doom’s blood anymore, but he still has a Chaos Emerald. With its power, and bit of spare hedgehog DNA, anything is possible.Gerald is a genius. His intellect is capable of solving complex problems while accounting for all sorts of variables. He created the Space Colony ARK, the Eclipse Canon and the Ultimate Lifeform - a perfect, immortal being of pure Chaos Energy. Yet, he did not account for the fact that Shadow might not like this latest creation.He takes one look at the female hedgehog - that Maria named Sonic after she took off across the lab in a blue blur - and scowls. Gerald doesn’t know where he went wrong. The female is beautiful. Her blue quills curve around a soft, delicate face. Long lashes frame eyes that shine like the gem she came from. She’s curvy in all the right places, with wide hips that are ideal for childbearing.The problem, Gerald decides, lies in her personality. Sonic does not behave demurely. She is loud rather than soft-spoken. She questions everything, challenges everything. Even Shadow, to whom she should be submissive. She is free-spirited as the wind, and no amount of etiquette lessons change that.Sonic was created to be Shadow’s mate, and yet all she does is argue with him. They argue over who’s faster, who’s stronger, who’s better suited to the title of Ultimate Lifeform. They argue over what to eat and what to watch and whose turn it is on the treadmill. When they’re allowed out, they do laps around the ARK, leaving trails of gold and blue and no clear winner.Gerald does everything he can think of to force them to bond. He puts them in the same enclosure and swaps out the bed with one made for two. Rather than share, the hedgehogs wrestle to determine who gets the bed, while the loser curls up in a corner with a blanket. He forces them to work together in the lab, until the other scientists complain that they can’t get any work done.Outside of the enclosure, he dresses Sonic modestly, in old clothes donated by Maria. Inside, she parades around naked as the day she was created. If the sight of an unclothed female inspires anything in Shadow, he doesn’t act on it. (Oddly, Sonic seems more comfortable that way, though typically only male Mobians forgo clothing.)Nothing seems to work. Maria coos about how cute the hedgehogs are together. She’ll say they’re obviously in love, but neither is willing to admit it. Gerald thinks she’d been reading too many books. He’s less optimistic about the situation, but he’s also patient. Nature will run its course sooner or later.By the time mating season rolls around again, the relationship between the hedgehogs hasn’t improved much. As Gerald watches on the monitors, Shadow and Sonic sit on opposite sides of the enclosure. Shadow is on the bed, a sheet wrapped conspicuously around his waist, while Sonic is curled into a ball atop a nest of blankets.For several agonizing moments, neither of them move. The only sounds coming through the speakers are their harsh breaths. The instant the frenzy takes over, there’s a palpable change, as though Gerald can see the cord of their control snapping. In a flash of blue and gold, the hedgehogs collide with a sound like crackling lightning. Defiant as ever, Sonic fights against Shadow’s attempts to pin her down. The two roll across the floor, tumbling one over the other as they fight for control. It’s a futile effort, of course. Even if she could manage to pin Shadow, what would Sonic do about it?Shadow growls as he pushes Sonic onto all fours. She allows it, nuzzling against the side of Shadow’s head, as though this is what she wanted all along. As though her previous resistance was only for show. She pushes her hips up, forcing Shadow’s engorged cock to run along the seam of her.Conveniently, one of the cameras sits at just the right angle, to where Gerald can zoom in and see the way Shadow’s cock hovers just outside of Sonic’s tiny pussy. (If Gerald had gone out of his way to make sure she’d be nice and tight down there, that’s no one’s business but his own.) He expects Shadow to shove himself in, to mindlessly seek his own pleasure, as is his right.Like Shadow, Sonic was created for one, singular purpose. Shadow’s is a grand one. As the Ultimate Lifeform, he will unlock the secrets of immortality. He will cure all manner of diseases. Most importantly, he will save Maria. Sonic, on the other hand, is little more than a glorified doll. A warm hole for Shadow to fuck and breed full super-powered hoglets. (In that regard, she isn’t much different than a human woman.) It’s about time she learned her place - under Shadow and stuffed full of cock.Except Shadow doesn’t take what is rightfully his. He nips at Sonic’s jaw, the column of her neck. His tongue and teeth trace the line of her spine, stopping at the base of her tail, lifted to expose her puffy little hole.His paws roam over her arms and shoulders, then back down to cup her breasts. Even in this, he defers to Sonic, watching her reaction and he pinches and rolls the sensitive pink nipples jutting out of peach fur. When she whines and tries to squirm out of his grasp, Shadow growls. A firm hand pushes her back into the position he wants, but he abandons her breasts. Instead, he reaches further down to toy with the other sets of nipples lining her stomach. This, she seems to allow as black-furred paws slide closer and closer to the place between her legs.If this were an experiment in the lad, Gerald would have snapped at Shadow to get on with it already. Sonic is right there, wet and ready for him, and yet, Shadow insists on toying with her, dragging things out, while her neglected pussy clenches around nothing. Doesn’t he see that she needs to be filled? What sort of man is he, to leave his mate so unfulfilled? Even worse, Sonic doesn’t seem to realize how unsatisfied she is. She nuzzles against Shadow, purring happily as his paw dip lower to tease over her folds. His finger comes away wet, a string of slick snapping as he pulls it away to taste it. His tongue laps at the shiny liquid on his fingers, and his entire body shudders.In the next instant, he dives down to taste her at the source. He laps at her damp thighs, going higher and higher until he buries his face in the crux of her legs. Sonic mewls as Shadow’s tongue spears into her, thick globs of spit and slick running down the sides of his face. One blue paw dips down to rub circles over her clitoris. Shadow ought to swat it away. Only he is allowed to bring her pleasure, and ideally, it should be from his cock alone. Instead, this seems to encourage him. He thrusts his tongue in time with her strokes as she pushes her hips back against his face. Her cries of pleasure grow louder and louder until they reach a crescendo, back arching and thighs trembling.Gerald suppresses an annoyed growl. How dare she come before Shadow? How dare she defy the purpose for which she was created? Poor Shadow doesn’t even realize that’s all he’s done is loosen her up. She might as well be a common whore. Gerald will have to think of a suitable way to punish Sonic for her insolence later. Some rigorous test that’s will punish even her limits.Shadow sits up. His muzzle is shiny with spit and slick, and his neglected cock hangs heavy and swollen between his legs. Precum beads at the tip as he takes himself in hand and finally, finally, lines up with Sonic’s entrance. Rather than slamming into her balls-deep, he takes it agonizingly slowly. He slides into her inch by inch, all the while watching Sonic’s face for any sign of discomfort. She murmurs in encouragement, hips rising to meet him until he sinks all the way in. Shadow growls low in his throat, his chest nearly vibrating with it, as he begins to rock against her. It’s slow at first, so gentle it’s painful to watch, but he quickly picks up steam as Sonic whines and writhes under him. He plants a paw on the small of her back, pushing her into the cold tile as he thrusts harder, faster.Blue and gold Chaos Energy sparks and crackles, interlacing until the colors are indistinguishable. The lights flicker and the monitors go black as Sonic screams loud enough to be heard through the glass, a second before the backup power kicks in. When the video feed comes back online, Shadow is draped over Sonic, teeth bared as he growls his pleasure. His eyes are bright, wild with uncontrollable lust and Chaos Energy. That oh-so-convenient monitor displays the place where they’re connected, Sonic’s pussy stretched impossibly wide as it's ravaged over and over again by Shadow’s thick cock. Shadow slams a fist onto the floor and cracks form in the tile.This is what Gerald wanted to see. How things out to be. Male and female entwined in a dance as old as time. Shadow’s thrusts are unrelenting now, chasing only his own pleasure, using Sonic as she was made to be used. Sonic is powerful, but only because she needs to be, to withstand Shadow’s onslaught. The sooner she realizes that, the better for everyone.Shadow roars, head thrown back as his hips stutter and still. A second later, pearly white cum drips around his cock and onto the floor. Still, he does not pull out. Good. That will increase the chance of his seed taking. Maybe once Sonic is round with a litter, it might slow her down a little. Maybe then she’ll learn to stop being so gods-damned defiant all the time. To be a proper mother and mate.Shadow rolls them over, lazily reaching around to stroke Sonic’s clit. He coaxes another, pointless orgasm out of her, but Gerald has seen enough for now. He cuts off the feed with one hand while buttoning his trousers with the other. Shadow and Sonic clearly have a lot to learn about their roles, and about mating in general, but oh well. There’s always next time. The frenzy isn’t over yet.