Yes, I shall now reveal to Inkbunny that I am a Sonic.EXE fan! While the creepypasta author turned out to be a... rather disturbing individual, I do admire his creativity and decided to put my own spin on it.
This creature is a sentient mass of dark matter that crash-landed on earth while seeking energy to form itself a body, powered by solar radiation and chaos energy that leaked out into space. He learned about Sonic thanks to picking up radio waves, and greatly idolizes the blue blur to the point he made himself a body that looks similar.
Inside his chest is a flat disc of unknown material, which is the only truly visible part of his body. Io's actual body is solid yet invisible, as dark matter cannot interact with visible light. Instead his appearance is a hologram, which causes some minor quirks like his eyes having x-shaped highlights.
His body is actually somewhat too small to hold the amount of energy he has, causing four cracks to spread along his chest. He gives them the appearance of scars. His fashion sense is another result of his radio studies, learning about unusual and failed fashion trends. He sports fingerless gloves, soleless socks--a form of stirrup that goes under the toes rather than the arch, which are then held up by suspenders--and a soft, scalloped robe. These are solid material, rather than part of his hologram.
After meeting Sonic and Tails, becoming practically glued to his hero's side, Tails gave him the name Io. This is partly from his cosmic origin, but also his ability to shapeshift and manipulate his immediate space in various ways, much like a multipurpose website.
While rather possessive of Sonic, he does try to give him his space, but sees himself as rivals with other potential crushes, and likes to flaunt his ability to shapeshift as he can 'give Sonic whatever he wants' in the bedroom.
Outside of that, he's a skilled fighter, able to shift between four main body shapes for offense, defense, speed, and neutral fighting. It's unclear if he can truly harness Chaos Power, but Tails' theory suggests his super form could be the equivalent of Sonic, Shadow, and Silver combined.
