Jelaskan Peran dari 100 Million BC

Michael Gross - Dr. Frank Reno

Christopher Atkins - Erik Reno

Greg Evigan - LCDR Ellis Dorn

Stephen Blackehart - Lt. Robert Peet

Geoff Mead - CPO Lopes

Dean Kreyling - Chief "Bud" Stark

Dustin Harnish - Young Frank Reno

Prince Pheenix Wade - Myrick