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 Jeff Conaway Sgt. Zack Allan Actor Patricia Tallman Lyta Alexander Actor Peter Jurasik Londo Mollari Actor Andreas Katsulas Ambassador G'Kar Actor Robin Atkin Downes Guest Star Joshua Cox Guest Star Walter Koenig Guest Star Clynell Jackson III Guest Star Douglas Netter Executive Producer J. Michael Straczynski Executive Producer, Writer John C. Flinn III Director