Kunihiko Katsura
First appeared: Ep 15    ¦    Last appeared: Ep 133
Kunihiko was the producer of Takeshi's Castle.
He occasionally appeared on the show in various roles, including being a guard in 'Sumo Rings', being a part of comedy sketches, and even being a contestant, along with his wife, in the first Couples' Special.

In 2014, Kunihiko acted as an advisor in the creation of Takeshi's Castle Thailand and assisted on production for the first few episodes.