Bruce Boxleitner Commander John Sheridan Actor Claudia Christian Cmdr. Susan Ivanova Actor Jerry Doyle Security Chief Michael Garibaldi Actor Mira Furlan Delenn Actor Richard Biggs Dr. Stephen Franklin Actor Andrea Thompson Actor Bill Mumy Lennier Actor Jason Carter Marcus Cole Actor Stephen Furst Vir Cotto Actor Jeff Conaway Zack Allan Actor Peter Jurasik Londo Mollari Actor Andreas Katsulas Ambassador G'Kar Actor Michael York Guest Star Michael Kagan Guest Star Roger Hampton Guest Star Dona Hardy Guest Star Douglas Netter Executive Producer J. Michael Straczynski Executive Producer