Popo is one of the playable characters in the Dairantou Smash Bros. (Super Smash Bros.) series, appearing as part of the Ice Climbers duo alongside Nana. Popo is recognizable by his blue parka and serves as the leader of the pair. Together, they use teamwork-based attacks to outmaneuver opponents. Popo's role in the series emphasizes cooperation and unique dual-character mechanics, making the Ice Climbers stand out among the roster. He is cheerful, brave, and determined to reach the top of every challenge.