Damnit, can't remember which other character needed revision...
Oh, right, two of the characters have almost identical symbols. either Tamn or Ferrin needs to change to something other than a wolves head. I'm thinking Ferrin, as Tamn is an actual wolf and thus has a specific reason for it.
Oh, as an afterthought, the prosthetic arm is not as big of a deal s you're making it out to be. things like that are commonplace in my AU, if not RWBY in general.
Hell, 3/4 members of team VLCN have some sort of advanced prosthetic device. L has a robotic leg, C used a combat-oriented exoskeleton during his first 2 years at Beacon, and N has a prosthetic voicebox.