The Teenage Mutant Ninja Turtles (often shortened to TMNT or Ninja Turtles) are a fictional team of four teenage anthropomorphic turtles, named after four Renaissance artists, who were trained by their anthropomorphic rat sensei in the art of ninjutsu. From their home in the storm sewers of New York City, they battle petty criminals, evil overlords, mutated animals, and alien invaders while attempting to remain isolated from society.The characters originated in the Teenage Mutant Ninja Turtles comic book before their expansion into a cartoon series, films, video games, toys, and other general merchandise. During the peak of the franchise's popularity in the late 1980s through the early 1990s, it gained considerable worldwide success and fame.

Tokyo Majin Gakuen Denki (東京魔人學園伝奇) is a franchise of Japanese video games, manga, and anime. The name Tokyo Majin Gakuen translates to "Tokyo Wizard Academy". Although there is a 2007 anime series which was released internationally, none of the original video games were ever released outside of Japan. The franchise began June 16, 1998 with the release of the PlayStation game Tokyo Majin Gakuen Kenpuuchou. It proved to be the first in the Gakuen Denki game series in Japan. The established universe, story, comics, and general term are shared under joint ownership, with managing creator Shuuhou Imai (今井秋芳) at the helm. Sales agency and production is handled by Asmik Ace Entertainment and Shout! Design Works.