Model C/Built to be 17/Same personality as the one controlling him/No/Biology/Chimera/student/This robot was built to let the one who controls him to be safe from the powers of things as they learn a semester's worth of courses, although it's unknown who is controlling him. He has the appearance of a male human with a metallic-like exterior.
(Yeah, for now, he's gonna be a mysterious character for plot-related reasons, but there will be clues later on that can point as to who controls him. Also he's called Model C on purpose so other characters can give him nicknames when they want to.)
Model C is walking through the hallway, seemingly talking to himself.
"Testing testing, I hope this mic is working!" he says to himself.