STI starts out disguised as Sonic, having the general look, but is given away by his messy quills, large black sclera surrounding the white irises, and rotten teeth. Once he partially reveals himself, STI becomes desaturated, his eyes become empty, his arms elongate, and his mouth opens wide, revealing it to be empty. Upon fully revealing himself, STI becomes much taller with longer arms and legs, his mouth opens wider, his sclera is bigger, and he now sports a single large eye in the middle.