Rockne S. O'Bannon Creator Roy Scheider Capt. Nathan Bridger Actor Jonathan Brandis Lucas Wolenczak Actor Don Franklin Cmdr. Jonathan Ford Actor Rosalind Allen Dr. Wendy Smith Actor Edward Kerr Lt. James Brody Actor Michael DeLuise Seaman Anthony Piccolo Actor Ted Raimi Lt. Tim O'Neill Actor Marco Sanchez Sensor Chief Miguel Ortiz Actor Kathy Evison Lt. Lonnie Henderson Actor Peter DeLuise Dagwood Actor Frank Welker Darwin Voice Stephanie Beacham Dr. Kristin Westphalen Actor Stacy Haiduk Lt. Cmdr. Katherine Hitchcock Actor John D'Aquino Lt. Benjamin Krieg Actor Royce D. Applegate Chief Manilow Crocker Actor Robert Ballard Self David J. Burke Executive Producer Patrick Hasburgh Executive Producer Steven Spielberg Executive Producer