Kevin Holloway

Does anybody know if Kevin Holloway that is the friend/enemy of Adam Powell ever appeared on the show, or was he always an unseen character. I know that Adam and Charles would mange him a lot in their talks, but I know his brother Herman Holloway and even their father were seen in the episode Feud for thought. But does anybody know if Kevin ever appeared on the show, and if so what episode(s) and the season(s) the they are from.