as Kevin Sullivan

as Greg

as Daniel

as Dr. Salzman

as Robert Underwood Johnson

as Mark Day

as Zee

as

as

as

as Keith

as Sammy's Dad

as Joshua

as Graham

as Andy

as Daniel

as Becket

as Raymond

as

as Robert Irwin

as

as Owen Chase & Peleg Folger (voice)

as Roderick

as

as Cons

as

as Research Tech

as Gilbert Blackwell

as Matt

as Michael Herlihy