John Vickery has played three different characters in Star Trek. He played Andrus Hagan in the TNG episode "Night Terrors", Gul Rusot in the DS9 episodes "The Changing Face of Evil", "When It Rains...", and "Tacking Into the Wind" and Orak in the Star Trek: Enterprise episode "Judgment".
Jeffery Combs has the distinction of portraying eight different characters on Star Trek series. He has played the roles of Brunt, Weyoun, Shran, Tiron, Kevin Mulkahey, Penk, Krem, and a holosuite guest. He is one of only five actors to play seven or more different characters in the Star Trek franchise, the others being Randy Oglesby, J.G. Hertzler, Vaughn Armstrong and Thomas Kopache. Coincidentally, Combs has appeared on Star Trek with all four of those actors.
Casey Biggs (Damar) is a member of the Enterprise Blues Band, which writes and performs songs about Star Trek. The other members are Vaughn Armstrong, Richard Herd, Steve Rankin, William Jones, and Ronald B. Moore. Biggs plays the rhythm guitar, and sings some of the back-up vocals.