Jack and Erik
Given that Jack dressed to cover his metal, right down to wearing a glove on his left hand, there was no metal actually showing. The only indication that something wasn't exactly right might be the leather strap around his neck that held his breast plate in place with his left shoulder.
Jack noticed Erik near him, and felt like the guy was checking him out. It made him a little apprehensive, though he was sure it was harmless. "Can I help you?" Jack finally spoke, thinking maybe the guy was a friend of Phil or Pepper, or someone he might have seen in passing at one of the various gatherings he had been to before now.