Actor: Minoru Chiaki

Minoru Chiaki appeared in Rashomon, Seven Samurai, Throne of Blood and The Hidden Fortress, functioning as the comic register in films that need one.

Seven Samurai gives him Heihachi, whose job in the group is explicitly to keep morale up, and The Hidden Fortress gives him one of the two bickering peasants George Lucas borrowed for C-3PO and R2-D2.