Masaki Sato

Sato's Dragon Ball film career began in 1987 as key animator for Dragon Ball: Mystical Adventure, continuing with four Dragon Ball television episodes until 1989. His film work expanded significantly in 1990, contributing key animation to Dragon Ball Z: Dead Zone while serving as assistant director for The Tree of Might and Bardock: The Father of Goku. In 1991, he directed Dragon Ball Z: Lord Slug, marking his only full directorial credit in the franchise, then returned as assistant director for Cooler's Revenge. He later provided key animation for The History of Trunks and Super Android 13, concluding his documented work in 1993.

Sato's tenure in Dragon Ball films spanned seven years of the franchise's most prolific theatrical period. Between television work and film commitments, he animated eight Dragon Ball Z episodes from 1990 to 1992, balancing episodic and feature-length production demands. His progression from key animator to director of Lord Slug reflects the typical career path for talented animation professionals, though his documented work in the franchise appears concentrated during this specific era.