Ushio functions as an admin in Team Aqua, an organization led by Archie that seeks to expand the world's oceans to enhance Pokémon habitats. Team Aqua members maintain a relaxed and informal dynamic with each other, differing from their rivals, Team Magma. Characterized as a "Boisterous Bruiser," Ushio embodies a physically imposing and energetic persona, aligning with Team Aqua's environmental objectives. His primary involvement occurs during Team Aqua's mission to awaken and control the Legendary Pokémon Kyogre, aiming to trigger a global flood for marine ecosystem restoration—reflecting the group's eco-terrorist goals. Ushio operates alongside fellow admin Shelly, executing Archie's directives throughout their terraforming efforts, consistently depicted as a high-ranking enforcer within the organization.