Repli-Star is a fictional character associated with Yuusha-Ou GaoGaiGar, appearing as part of the Repli-Genesis and Zonders-related threats in the series. The character is portrayed as an artificial or replicated being tied to the antagonistic forces that challenge the Gutsy Geoid Guard and GaoGaiGar team. Repli-Star serves as an enemy presence that supports the series’ themes of corruption, imitation, and the struggle between human courage and mechanical or alien menace.