Roxanne sent her Nosepass to battle against Sapphire's Aron, Rono. Nosepass protected itself with Harden against Rono's Metal Claw. Sapphire tried to call Rono back, but Nosepass' magnetic force caused Rono unable to be called back, and limited his movement as well. Nosepass launched Rock Throw, which hit Sapphire and Rono, since it had the advantage over Rono. Nosepass also launched Rock Slide, which encased Rono and Sapphire, making Roxanne believe she won the battle. However, Sapphire threw some rocks behind Nosepass, who turned around. Since Nosepass' magnetic force was always pointing to the north, Nosepass became confused and was defeated by Rono. The battle was remembered by Sapphire, who met up with Ruby at Dewford Town.
The Gym Leaders and their Pokémon were recalled, including Roxanne's Nosepass, for they had to fight Team Aqua and Team Magma's admins. Brawly and Roxanne faced Groudon, with the latter sending Nosepass. Nosepass prevented Groudon from moving onwards by using Block, then used Rock Blast to wound Groudon. Due to Courtney's interference, Roxanne was forced to forfeit and let Courtney's Ninetales defeat Nosepass. This dispelled Groudon's Block, allowing it to continue onwards. Nosepass lay defeated, while Roxanne was frustrated she lost against Courtney and couldn't stop Groudon.