In the non-canon special 'One Piece: Dream Soccer King!', Helmeppo serves as the referee for the penalty shootout between the Straw Hat Pirates and the Villain All-Stars during the Grand Line Cup final. He officiates the decisive tiebreaker segment, maintaining neutrality throughout. Helmeppo manages the shootout procedure: five players from each team take turns attempting goals against goalkeeper Koby. His functional presence structures the sports-themed competition, strictly facilitating the soccer match rules without gameplay involvement or personal character development specific to this short. This role aligns with the special's comedic, lighthearted focus.