Episodio 21

Michael Ironside

Captain Oliver Hudson

Jonathan Brandis

Lucas Wolenczak

Don Franklin

Commander Jonathan Ford

Michael DeLuise

Seaman Anthony Piccolo

Ted Raimi

Lieutenant Tim O'Neill

Kathy Evison

Lieutenant Lonnie Henderson

Elise Neal

Lieutenant J.J. Fredericks

Peter DeLuise

Dagwood

Frank Welker

Darwin (voice)

Dustin Nguyễn

Chief William Shan

Kent McCord

Commander Scott Keller

Jesse Doran

General Thomas

William Morgan Sheppard

The Professor

Thom Sherman

Ensign Sheppard

Karyn Malchus

Alien