Shinzo, known as Mushrambo in Japan, is an anime television series produced by TV Asahi, Toei Advertising, and Toei Animation. It was directed by Tetsuo Imazawa, with Mayori Sekijima handling series scripts, Sachiko Kamimura designing the characters and Katsumi Horii composing the music. In the series, genetically-altered creatures known as Enterrans take over Earth and rename it in their own image called Enterra. Now three Enterrans have to protect the last human in order to find the hidden sanctuary called Shinzo and restore the human race. The anime focuses primarily on the adventures they undergo while working to accomplish this task, though battle action becomes the main focus in the middle of the series. Due in part to the popularity of Hunter × Hunter in some areas in the competing timeslot, the series struggled with an average viewership of 3.5%, and was cancelled. In the United States, the anime was licensed and dubbed by Saban Entertainment & Buena Vista Television.

Toei Animation Co., Ltd. is a Japanese animation studio primarily controlled by its namesake Toei Company. It has produced numerous series, including Sally the Witch, GeGeGe no Kitarō, Mazinger Z, Galaxy Express 999, Cutie Honey, Dr. Slump, Dragon Ball, Saint Seiya, Sailor Moon, Slam Dunk, Digimon, One Piece, Toriko, World Trigger, The Transformers, and the Pretty Cure series.