Things were changing in the city of Wireframe but that was perhaps the only thing consistent about the city. Long before Robotnik's rise to power a mountain mining town mostly home to bats and other nocturnal animals who dwelled along the cliff face called Nocturnia had rested. bit by bit the mountain grew hollow of gems and ores and metal supports filled out the maze of tunnels and living stone and dwelling on the mountain became dwellings in the mountain.


When the mine closed Nocturnia adapted, it became a place of leisure, a party city that was never still. Certain levels of the old mines here were reinforced and made into dance halls and Musical stages that pumped with life and vibrancy from sun up to sun set. A massive hotel filled with splendor sprang up as old freight elevators were modernized. Amusement rides were made from Mine cart tracks and recycled from old mining equipment. There was joy and celebration drawing funds into the city from far afield. Then came the bars where the intoxicating atmosphere became literal. 


The lifestyle of excess burnt itself up leaving a slum city in its wake. Gone were the music performances, the wild dance clubs, and the bars with endless drinks. Left behind were hollow tunnels and even hollower people. The city would become a victim of Robotnik's early scheme who found an easily manipulated labor force and more than enough space to begin producing his SWAT-bots. The fact that his factories turned the mountain into a cesspool of toxic chemicals was of no concern to him. When Robotnik finally made his move in earnest Nocturnia was finished and the entire population had been roboticized. left unguarded to simply churn out an ever swelling army of SWAT-Bots and later on Badniks. 


Enter Boombox, a bat who would steal the dead city of Nocturnia from Robotnik's control and resurrect it as Wireframe. Boombox was born into the decay of Nocturnia, his body a reflection of the withering city. While the exact cause of his illness was never pinpointed the conditions it caused were very plain, Boombox spent most of his days sick in bed listening to music or reading. He was unable to fly due to the frailty of his body and he struggled to even walk at a steady pace without a respirator. Boombox was one of the few people aside from Sir Charles, Nicole and Robotnik himself to know that the Roboticizer was meant for medicine. So when the city fell and was roboticized Boombox simply outsmarted the machines. He crafted a circlet of circuitry that when he was roboticized allowed him to retain his free will. At first he simply subverted the various factory lines, stemming the tide of enemy forces for hours each day. Eventually it hit him that he could disable the security bots and put a stop to the factory altogether. Initially that proved false as his fellow Robians were acting on orders to repair the SWAT-bots and the factory lines. So he began liberating the various Robians, restoring their free will to them. 


Nocturnia's transformation into a Robian city was something that only came after the Freedom Fighters had dismantled most of Eggman's power base.  Mobians were terrified of Robians because of how many false starts there had been of freeing them from Robotnik's control. One minute Robians were basically just metal people and the next their minds would be stripped from them and they were dangerous machinery. The Robians themselves were scared of the potential to fall back under enemy control. Boombox had a space fully in his control not fit for Mobians to live in and it had a fully robotic population already. So once more the hollow mountain was transformed. Factories and facilities from Robotnik were converted into massive repair bays with charging docks. Gigantic towers covered the mountain peak and pierced into the stone to the very depths of the mine to form a massive power grid and data network. Robian worked with reprogrammed robots to clean away the toxic mess and encourage new growth around the mountain.


Today was just another transition to a newer, hopefully happier, phase of the city. Today the Great Upgrade was being applied. Robian citizens were being given priority for the change as it represented a near impossible dream to them, a near total return to their lives prior to roboticization.


Robians resemble robots but what they truly are is much more complicated. Sir Charles' creation was borderline magic and it took Boombox years to understand fully what it did. Depending on what specific iteration one was looking at the process varied in its steps but not in end results. The Process converted flesh and bone other tissues to metal organs like the heart and lungs were fused into a powerful generator and cooling system things like the stomach and intestines were nearly totally removed in place of reservoirs of fuel and lubricants. The vascular system was repurposed as a distribution system to keep the parts moving smoothly. The brain was wholly digitized transformed into a central processing unit of incredible power, which was sadly how it was possible to so easily enslave Robians. 


Boombox and the Freedom Fighters had figured out dozens of ways to free the Robians over the course of the war but none of them stuck for very long, save for one most dire method. The Roboticizer printed in nearly invisible script a code identifying each individual Robian and potentially allowing their transformation to be reversed. Each Roboticizer unit had different info and so unless it was recovered intact any Robian created by that machine would be stuck as Robians. Likewise if a Robian had a part damaged thus rendering the identification incomplete they couldn't be restored to their organic selves. 


Boombox was the first to notice that the Robians were suffering from the false hope of returning to their organic selves and so he was the first to make the leap and show them what they had to do. Boombox replaced literally every piece of his initial Robian body. Super heated claws, Silent flight rotors in his wings, a sonic cannon in his mouth, more powerful sensors for his ears and eyes, he amplified his power systems to run it all, and finally he swapped the heavy metal frame for lighter materials including durable translucent green plastic armor. He had hit the people with a harsh reality. There would be no turning back for most of them and those who clung to rusting pieces in dire need of replacement would not survive to see the day. It was better, he convinced them,  to live as a Robian than to die.


Until today, when the miracle happened. Courtesy of Synth Sonic Wireframe now owned a Nanite-forge and the Genetic Variable Engine that worked together to create the Great upgrade. Robians walked into one of the booths where they would be scanned and then a packet of nanites would be applied to their chest that would reconstruct them as near perfect replicas of Mobians. Before they left they'd be dressed in a simple white leotard for the sake of decency. The citizens of Wireframe were utterly un bothered by the fact that to achieve these new forms they had to become Futas. possibly because they had spent several years without any gender to speak of, and so being both male and female was not that big of a transition. It wouldn't just be the Robian's getting the upgrade, over the years wire frame had picked up and repaired a good number of Badniks, Egg Pawns and GUN drones for various purposes. They too were citizens of Wireframe and owed the great upgrade. The streets were a buzz with talks about how to adjust the city to the fact that they were more like Mobians than before. How they would need to set up places to eat and sleep. maybe restoring some of the old leisure elements to working.


Boombox was looking at himself in a mirror and contemplating the packaged upgrade in his hands all he had to do was press a button and he would be transformed. The bat had never contemplated returning to flesh his old body was so sickly it was a death sentence. in his hands was the next best thing not fully organic but so very close as to not matter. he'd be able to fly on his own wings for the first time in his life. he'd be able to walk the streets unassisted and actually smell flowers he had planted. He would be able to touch the trees that he had nurtured and feel the bark in more than just the abstract sense. He'd be able to feel the cool night breezes that haunted his dreams in the waking world. It was glorious, it was paralytic, there was so much to gain but still he hesitated. Boombox looked out over the city already work crews were demolishing sections of the city and almost as fast as the buildings came down new buildings were rising.  Boombox smiled internally as he realized that this was just another transformation, no more an end than the ones that had come before. He dug his fingers into the pod, all ten fingers finding the switches.


Boombox watched as the grey ooze coated his fingers sweeping up his arm internal alarms blared as his being was dissolved and reformed. the nanites swept over his whole body obscuring his vision. For a second his body screamed at him in utter terror as it was unmade and then silence. The first thing he was aware of was how scratchy the carpet was under his bare feet. Then how cold the room was in general. Finally his vision returned and he looked himself over. Boombox was covered in a vibrant positively acidic looking green fur which he had not expected as his original body had been a nearly white gray. His arms and legs were muscular in ways he had only dreamed of, the bat lost himself in flexing his biceps for a moment. Flapping his wings he let out a bark of laughter as he propelled himself up off the ground nearly reaching the ceiling. As he fell to the ground he was reminded of his newest assets when his breasts jiggled from the landing. 


Boombox had been on the younger side when he had been Roboticized so his first real brush with sexuality was as he gingerly reached up and squeezed his own chest, only to immediately begin stroking and fondling his breast jiggling them lightly with his palms. The bat had seen porn more out of curiosity than any real desire for sexual gratification, and that was why as he played with his new tits he gave his nipples a pinch much more firmly than he really should have. hissing out a swear at the pain  he left his breasts resting as he gripped his cock. It was a familiar and alien sensation he could recall when rubbing it as he bathed but it was now much larger, fully erect and quite sensitive. Stroking himself off Boombox found his thoughts drifting to the gorgeous bodies of the citizens of Wireframe. He fantasized about having their bodies against his. He found his thoughts drifting to the lovely mouse girl Opera and wondered if she'd live up to her promise to "show him what he was missing" one day soon. Boombox lost his balance as he started coming his cock spraying his seed on his belly and tits as he landed on his rump. The bat laughed at the pain of the impact, not even a fraction of the feeling of his first orgasm. Boombox laid back fully and decided that he'd message Opera in a minute or so and see if she would indulge him. Things were changing in Wireframe and all for the better.