They debut in Chapter 198. Plusle and Minun meet Ruby and his Pokémon on the Abandoned Ship, where they show Ruby a diary from one of the ship's old passengers. They then trick Ruby and his Pokémon into accepting berries that make them confused. Cackling, Plusle and Minun flee with Ruby in hot pursuit. They try to keep Ruby away from a certain door, but once he figures out what they're up to, he's determined to find what's behind that door; unfortunately, Mitch of Team Magma interferes, knocking Ruby out and going behind the door to find the scanner that Plusle and Minun were protecting.