Sei Young is a South Korean Animation studio, mostly hired to do work on shows by other companies (whether North American or Japanese, usually with Toei Animation).

See also DR Movie and JM Animation, other South Korean studios doing work from other companies.

Sei Young's work includes (Worked outsourced by Toei marked with *) :

• Albegas*
• Alvin and The Chipmunks (1990)
• Camp Candy (1992)
• Captain N: The Game Master (First two seasons, replaced by Plus One in the third)
• Captain Planet and the Planeteers
• Defenders of the Earth
• Galaxy Express 999*
• G.I. Joe*
• Hakugei: Legend of the Moby Dick
• Laserion*
• Nadia: The Secret of Blue Water (Co-producer with Studio Gainax & Group TAC; also had a hand in the film)
• Pro Stars (With Dong Woo)
• The Real Ghostbusters (With TMS Entertainment, Wang Film Productions, Toei, Hanho Heung Up, Visual 80, Dong Yang Animation, Dai Won, Saerom/Plus One Animation, Trans Arts & KK C&D Asia)
• Super Mario Bros Super Show
  • The Legend of Zelda
  • The Adventures of Super Mario Bros 3
• Transformers
  • Transformers Generation 1*
  • Beast Wars II (Outsourced by Production Reed)
• Widget the World Watcher

Tropes associated with Sei Young:

• Animated Adaptation: The Real Ghostbusters and the Mario & Zelda cartoons
• Merchandise-Driven: Again, the Mario and Zelda cartoons