Characters played by Ed Asner
President Thomas D. Moss
Characters played by Sharisse Baker-Bernard
Lt.Meryl McPherson
Characters played by Majel Barrett
NASA Chief Suzanne O'Dell
Characters played by Nick Benedict
Dr. Robert Olson
Characters played by Carlos Bernard
Lt. Ronaldo Alvarez
Characters played by Douglas Coler
Commdr. Hank Wyatt
Characters played by Sibel Ergener
Lt. Natasha Bekov
Characters played by Elaine Giftos
NASA Oversight Officer Gennifer Gianni
Characters played by Christopher Gilman
Lt. Wolfgang Reinhardt
Characters played by Koji Kataoka
Mister Jones
Characters played by Crystal Kwon
Lt. Eiko Saito
Characters played by Alain Lambert
Dr.Jacques Montand
Characters played by Richard Lawson
Mission Flight Director Maynard Nixon
Characters played by Greg Lewis
ISS Commander Vladimir Gagarin
Characters played by Brandon Maggart
Dr. Henry J. Walker
Characters played by Jack McGee
Dr. Zed Dangerworth
Characters played by Richard McGonagle
Poppa Computer
Characters played by Robin Riker
Lt. Fiona Boggs
Characters played by Stanton Rutledge
Council of Eight - Mr. One
Characters played by Jerome Seven
Council of Eight - Mr. Seven
Characters played by Robert Vitelli
Capt. 'Sharky' Kirgo