Dr. Slump
Toei has also created eleven animated films based on "Dr. Slump", beginning with "Hello! Wonder Island" on July 18, 1981. They continued to produce one film a year until 1985; ""Hoyoyo!" Space Adventure" on July 10, 1982, "Dr. Slump and Arale-chan: Hoyoyo! The Great Race Around the World" on March 13, 1983, "Dr. Slump and Arale-chan: Hoyoyo! The Secret of Nanaba Castle" on December 22, 1984, and "Dr. Slump and Arale-chan: Hoyoyo! The City of Dreams, Mechapolis" on July 13, 1985.