Ulf Otsuki

as Self

as Nostradamus

as Old Santa (1 episode)

as High Priest Saw (2 episodes)

as Kashimu (2 episodes)

as Wolf (1 episode)

as Gōnin Abdad (1 episode)

as Professor Hassler

as Russian soldier being interrogated

as Professor Hassler

as Professor Hastler (35 episodes)

as George

as Seatopian Agent

as Ivanov

as Harley Hendrickson (1 episode), as Harley Hendrickson (voice) (1 episode)