Michael O'Hare Cmdr. Jeffrey Sinclair Actor Claudia Christian Lt. Cmdr. Susan Ivanova Actor Jerry Doyle Security Chief Michael Garibaldi Actor Mira Furlan Delenn Actor Richard Biggs Dr. Stephen Franklin Actor Andrea Thompson Talia Winters Actor Stephen Furst Vir Cotto Actor Bill Mumy Lennier Actor Julie Caitlin Brown Na'Toth Actor Andreas Katsulas Ambassador G'Kar Actor Peter Jurasik Londo Mollari Actor Julia Nickson Guest Star Louis Turenne Guest Star John Vickery Guest Star John Snyder Guest Star Curt Lowens Guest Star Patricia Healy Guest Star Macaulay Bruton Guest Star Aki Aleong Guest Star Denise Gentile Guest Star Janet Greek Director Richard Compton Director Bruce Seth Green Director John C. Flinn III Director Lorraine Senna Ferrara Director J. Michael Straczynski Writer Jim Johnston Director Lawrence G. DiTillio Writer Marc Scott Zicree Writer David Gerrold Writer Kathryn M. Drennan Writer