How many movies have Hideyuki Tanaka and Kenji Yokoyama collaborated on?

They have worked on 3 movies together! Their first movie together was Future War 198X (1982) while their highest rated movie together was Origin: Spirits of the Past (2006). They have not worked together since Origin: Spirits of the Past (2006). They are most known for their animation films together.

Origin: Spirits of the Past (2006)

Role
Doctor Sakul - Toolone cum Sakul (Voice)
Crew
Key Animation

Saint Elmo - Apostle of Light (1986)

Role
Jeff (voice)
Crew
Key Animation

Future War 198X (1982)

Role
Michael (voice)
Crew
Key Animation