Impressionist (imitator) - Self or acting?
I have one (non-fictional) series which includes a section where the person is "imitating/impersonating" a well-known sport personalities, such as athletes, sports commentators etc. The person may have an intentionally cheap wig, moustaches, clothes etc, but this is mainly voice/mannerism imitation. This is not a stand-up comedy/talk show or stage type of show. He's credited simply as "imitation/impersonation" and he does not appear in the series elsewhere (let's say, as a guest).
Just wanted to confirm that is this type of credit "acting" (Various Characters, basically), or still "Self"? Some may feel that imitation is a somewhat borderline case (Kevin Spacey imitating Al Pacino on Letterman, or the stand-up comedian doing it on stage).