President Thomas D. Moss
Lt.Meryl McPherson (as Sharisse Baker)
NASA Chief Suzanne O'Dell
Dr. Robert Olson
Lt. Ronaldo Alvarez
Commdr. Hank Wyatt
Lt. Natasha Bekov
NASA Oversight Officer Gennifer Gianni
Lt. Wolfgang Reinhardt
Mister Jones
Lt. Eiko Saito
Dr.Jacques Montand
Mission Flight Director Maynard Nixon
ISS Commander Vladimir Gagarin
Dr. Henry J. Walker
Dr. Zed Dangerworth
Poppa Computer (voice)
Lt. Fiona Boggs
Council of Eight - Mr. One
Council of Eight - Mr. Seven
Capt. 'Sharky' Kirgo (as Robert Abrams)