Moriyama began working as an in-between animation when he was a student at Kanto Daiichi High School. After graduating from high school, he joined Studio Musashi, which was recruiting staff through newspaper advertisements. His first work as an official in-betweener was for
Toei Animation's
Wakusei Robo Danguard Ace. He then moved to Studio Cockpit, where he worked on
Galaxy Express 999, before moving on to NeoMedia. At NeoMedia, he worked on
Invincible Robo Trider G7 for
Sunrise,
Doraemon for
Shin-Ei Animation, and
Belle and Sebastian for Visual 80. With
Invincible Robo Trider G7, he was promoted from in-between to key animation. He left NeoMedia in 1982 to work as a freelancer, starting with
Combat Mecha Xabungle and
Acrobunch. The popular anime
Urusei Yatsura, in which he participated from the same year, was Moriyama's breakthrough work. With this series, he made his debut as an animation director and storyboard artist, and was in charge of the opening animation for the first time, joining a group of popular animators overnight. Chief director
Mamoru Oshii, who was responsible for
Urusei Yatsura, expected him to become a partner, so Moriyama tried his hand at manga as well by illustrating a manga written by Oshii that was serialized in the
Animage magazine in 1984 called . He also worked on the
Urusei Yatsura films as well, including and films
Beautiful Dreamer and
Only You. For
Beautiful Dreamer, he worked on
key animation,
animation director, as well as
mechanical designs for the film. After the end of
Urusei Yatsura, he was selected as a character designer for the later series
Maison Ikkoku, and has since been in charge of character design for many other works. In 1987, he won the 4th Japan Anime Awards in the Animation Director category. After that, he shifted from animating to directing. Yuji Moriyama is credited with character design and
animation director for the
Project A-Ko series. Moriyama was one of the founding members of Studio MIN, a group of freelance animators, and after MIN was disbanded in 1991, he participated in numerous works since, mainly for
Chaos Project and
Pierrot. Some of his many pennames include , , , ,
MONTAN, , , , , and . ==Filmography==