Popo is in the front, and Nana is in the back
The Ice Climbers are a pair of mountain climbers consisting of Popo and Nana. They appear in Ice Climber, Super Smash Bros. Melee and Super Smash Bros. Brawl. Popo also makes an appearance in one of the microgames in WarioWare Inc: Mega Microgame$!. They are unique for being the only character that consists of two people in the Super Smash Bros. series. In the Super Smash Bros. games, the leader of the two will always be Popo, but if the right costume is changed, Nana will appear to be leading as Popo will be in the back wearing light blue or white, and Nana will be in front wearing orange or red. This matters because if the leader is defeated first, then the follower will automatically lose. Though if the follower is defeated first, then the leader may continue to fight by his or herself, albeit with a distinct disadvantage.