Mook Animation is an animation studio based in Japan and started in 1986. Mook Animation formed a business alliance with DLE in 2006 and was known as Mook DLE; however they ended their partnership in 2008. Mook has created Animation for Western programs, mostly for Hanna-Barbera and later Cartoon Network, such as SWAT Kats (four episodes from the first season and the entire second season), The Real Adventures of Jonny Quest, Scooby Doo on Zombie Island, Scooby-Doo and the Witch's Ghost, Scooby-Doo and the Alien Invaders, and Scooby-Doo and the Cyber Chase. They provided the Animation for which debuted spring 2008 on Cartoon Network.