Bruce Boxleitner Commander John Sheridan Actor Jerry Doyle Security Chief Michael Garibaldi Actor Mira Furlan Delenn Actor Richard Biggs Dr. Stephen Franklin Actor Bill Mumy Lennier Actor Tracy Scoggins Capt. Elizabeth Lochley Actor Stephen Furst Vir Cotto Actor, Director Jeff Conaway Sgt. Zack Allan Actor Patricia Tallman Lyta Alexander Actor Peter Jurasik Londo Mollari Actor Andreas Katsulas Ambassador G'Kar Actor Dana Barron Guest Star Mike Genovese Guest Star Reggie Lee Guest Star Vincent Riotta Guest Star Douglas Netter Executive Producer J. Michael Straczynski Executive Producer, Writer