This is “darker side” of acting, for it allows a character to impersonate others. If the character is attempting to impersonate a specific person that he has encountered, the check is made with a -4 penalty. Note that the character cannot impersonate any individual or group that he is not reasonably familiar with (technically, he CAN try, but he will fail, even on a Critical Success.) Unlike Acting, this skill has little to no use for gainful employment unless one can find a way to get people to pay to see impersonations of others. For obvious reasons, Constructs cannot take this skill.
Critical Success: The disguise or impersonation is so perfect that nobody doubts the identity of the character.
Critical Failure: The character’s cover is blown and trouble will almost surely follow.