Kinnikuman II Sei: Ultimate Muscle
Genres: Action, Comedy, Sci-Fi, Sports
Type: TV, Episodes: 13
Aired: Apr 8, 2004 to Jul 1, 2004
Studio: Toei Animation
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
The Chojin Crown, the tournament which Mantaro (Kid Muscle) reluctantly participates in. After going along with the obstacles (most of which were created to try and eliminate him), he qualified.

(Source: Wikipedia)