Kinnikuman II Sei: Muscle Ninjin Soudatsu sen! Choujin Daisensou
Genres: Action, Comedy, Drama, Romance
Type: Movie, Episodes: 1
Aired: Jul 20, 2002
Studio: Toei Animation
Source: Unknown
Rating: PG-13 - Teens 13 or older
Synopsis:
In order to save a princess, Mantarou (Kid Muscle) and the gang must find a special ginseng. They are later joined by Kevin Mask. 

(Source: Wikipedia)