User blog comment:Zolnir/James Ironwood - The Hand J... Nope! RESISTED!/@comment-3257939-20140801062648

You just had to point it out, right? I also believe in the strict rule that if a character covers his arm: it's because there is no arm.

Kinda of make sense. The general who happens to be the related to a lot of robots: The security bots, Penny, maybe even the mech who fights RWBY, loses his arm so he builds one.