as Lincoln Thorsen aka Flex(1 ep)
as Captain Dave Rothall(1 ep)
as Agent Biller(1 ep)
as Malcolm(9 eps)
as Ian Hughes(4 eps)
as Lonnie Washington
as Paul Ehrlich
as Clive (uncredited)
as Capt. Alan Beck(1 ep)
as Dr. Fischman(1 ep)
as Tommy Zane(1 ep)
as Mr. Beck
as Rob
as Larry Dersh(1 ep)
as Randall Mathis(3 eps)
as Max Pierson
as Dr. Art MacGregor(1 ep)
as Kelvin Blake(1 ep)
as Basil
as Ron 'Slacks' Sacks(3 eps)
as Peter Callas(1 ep)
as Reporter #1
as Bart Jameson(1 ep)
as Evan Harris(1 ep)
as Mr. Diggs(1 ep)
as AJ(2 eps)
as Stan Wright(5 eps)
as Craig Donovan(66 eps)
as Ben Dodd
as Ben Dodd(2 eps)
as Shelby(1 ep)
as Det. Collins
as Tim McAllister(1 ep)
as Paul Hager(1 ep)
as Commander Jonathan Ford
as Commander Jonathan Ford(58 eps)
as Alex Wheeler(12 eps)
as Alex Wheeler
as Noah Dixon(44 eps)
as Todd Marvin
as Calvin Garvey(9 eps)
as Kevin
as Michael Stafford
as Greg Martinson(1 ep)
as Tourist in Hall of History [Eight Years Later]