Metal Sonic was running in a loop both mentally and literally. “I’ve assembled every last remaining creation of Dr. Eggman.” he said as he passed  the cell where Omega was stored deactivated next to other traitorous units like Heavy, Bomb, and Gemerl. “I’ve rebuilt his most dangerous weapons.” he tilted upwards flying past Big Arm, the Death egg robot, and the Egg Dragoon. “I even went so far as to build machines he only planned.” Metal Sonic zipped through a tight curve at near max speed past a varied host of badniks, swat-bots and egg-pawns. “I even built variants of myself.” he said, passing models of Metal Sonic designed for full flight, space travel, and aquatic conditions. “But it won’t be enough to stop him.” the robot considered aloud as he came to a halt. “How can we beat them? The Freedom Fighters have defeated 90 percent of this army before, it's not like it would be harder a second time…” mentally he had also considered weaponizing the robians but that would require a huge effort thanks to the more technologically inclined Freedom Fighters efforts to liberate them from ever being controlled again.


“If our strategies can be overcome then it is up to us to evolve into more advanced machines.” A Shadow Android said. “The abilities of your NeoMetal body could be replicated and transferred to the rest of us.”

Metal Sonic considered that. “That’s still just repeating the same tactic. But… if we scan more bio data perhaps we could evolve specific machines by using NeoMetal to enhance them.” Metal Sonic, considered aloud. “After all there were several individuals not scanned back then and they have gained new allies with greater powers since.” the machine hedgehog nodded. “Shadow Android, I will task you with the construction of a genetic variable engine.”

“Hmph I’ll be done before you get back.” The doppelganger declared lifting one hand and teleporting away.


“I should hope so. This isn’t going to be a quick task.” Metal Sonic said to the air before speeding out of the hidden base.

--

Metal Sonic was very confused. It had barely been half a year since Eggman died and yet Robotropolis was gone, there was not a trace left of its creator. Dozens upon dozens of new buildings stood in place of Eggman’s factories, refineries, and warehouses, most of it housing. Metal Sonic was nearly overwhelmed by the wealth of biological data he was getting just from the  first street corner he had chosen to look at. The data didn’t all make sense though. For one thing the amount of health problems was drastically lower than it should be. It was like somehow a third of the population's biology had been given a factory reset. There was also an unprecedented level of hermaphrodites. His bio-scanner was picking up that roughly a third of the population was now male and female. Metal Sonic was confused because he was under the impression that the condition was rare for a reason.


As the robot moved through the streets, his speed keeping him unseen, he recorded more anomalies.  Bunnie and Antoine D'Coolette both registered as hermaphrodites and he knew that was wrong. He would later spot Amy Rose, Blaze, Cosmo, and Silver all registering as hermaphrodites. It was enough to make the evil automaton wonder if he was malfunctioning. Another out of place detail was just how many mobians were throwing caution to the wind and having sex in public with no contraceptives in use. Most alarming was spotting a blue hedgehog that was both plainly a hermaphrodite and Sonic. Eventually though he had gathered all the bio data he could handle without a hard drive wipe and made his way back to the base


---


It took nearly an hour to dump all the bio data into the machine the Shadow android had crafted. The whole while the mechanical doppelganger wondered what had happened to the populace. Not out of concern for them but fear that his plans would be disrupted by the same unknown variable. Metal Sonic felt the equivalent of lightheaded from copying and deleting so much information. Not that it stopped him from shifting into his NeoMetal body in the slightest. While internally he was always NeoMetal he had to activate the nano machine factory in his body and take on the NeoMetal chassis before he could upgrade himself.  His arms forming into cones from which his hands emerged, his shins spreading out as more thrusters formed on his legs. The spikes on his head extended out into a star pattern as pauldrons emerged on his shoulders. The last touch was a flared skirt with a studded belt appearing.


“I’ve set it up to package the upgrade as a nano-machine kit that will apply the bio-data to each robot based on the model.” Shadow Android informed NeoMetal Sonic. “That way we don’t have a Crabmeat that winds up with seagull bio-data. For you though a quick plug in should be all it takes.”


“Good thinking. The doctor nearly outdid himself when he made you.” Neometal said as he formed a cord leading directly to his CPU and plugged himself into the unit.  


NeoMetal let out an electronic squawk as the machine went to work. Too late did he realize he had made an error. The Shadow Androids machine included the whole of Eggman’s database and was effectively a giant brain. It had done as told and matched his blueprints to Sonic’s bio-data and was using both to create a more perfect body. The problem was that somehow it had interpreted the biological as more important than the mechanical. In short it wasn't trying to make more perfect combat capable devices, it was making the machines as close to living creatures as it could manage. And considering it had his nanobot generator, the blueprints for the Auto-Automaton infiltrators and the bio-data it was going to get very close indeed. 


Neometals body all but liquefied, his awareness of the events that followed limited to system messages as he was rebuilt. His innermost frame shifted, becoming a metal hedgehog skeleton inside of which power regulators increased his energy capacity ten fold. His generator and the nanomachine production system bled together becoming a heart that carried power and restorative nanites through his body like blood. Artificial muscle layered itself on those metal bones meaning that he would be even lighter and stronger than his previous body. In his lower torso formed a stomach of sorts where the nanites would break down substances to use as new building material. A layer of soft blue silicone flesh coated his body as his optics shifted from a single lens to two circular cameras disguised as normal eyes. The false flesh shifted as the nanobots formed new organs including a cock testicles and a gestational chamber. The flesh of that groin just below this new genitalia parted into the lips of a vagina. Breasts formed on his chest as the artificial flesh was covered in metallic blue faux-fur. New drivers installed into his software beyond his control. The nanites filled his false flesh with billions of pleasure receptors as his mind came alive with new senses. Smell, taste, and touch beyond rudimentary pressure and temperature changes. Neometal fell to the ground overwhelmed by the scents and feelings as the physical transformation came to a close.


Neometal experienced an epiphany that beyond simply giving the machine the wrong commands it was afflicted with a virus. The bio-data had included a virus that turned the mobians into sexually charged Futanari a virus that now was affecting his programming. His desire to serve Eggman and take revenge on the Freedom Fighters was erased and supplanted by an urge to use his new body to pleasure and reproduce with them. NeoMetal Sonic met his end as that core directive was replaced, and in his place Synth Sonic stood up.


“That didn’t look pleasant.” the Shadow Android said and Synth Sonic found himself looking at him not as a fellow thinking machine but as a lifeless lump of metal. Synth imagined how much better he would look once all the harsh metal was covered up in silicone and faux-fur.


“I’ve never felt better.” Synth Sonic replied, his voice having just enough reverb to obscure his falsetto. Rubbing his breasts down and along the curves of his body he stepped forward looking at all the unconverted machines. They would all soon be lovely Futas just like him. “So much work to be done…” he turned back to the Shadow Android. “Let’s Begin.”