To battle for the Bluk Berry, Drew sent Roselia against May's Beautifly. Beautifly tried to attack Roselia, but was knocked down by Roselia's Petal Dance and Stun Spore attacks. Roselia attempted to defeat Beautifly with Magical Leaf, but May gained confidence; Beautifly stood up and countered the attack with Silver Wind, surprising Drew. Just then, Team Rocket stole the Bluk Berry. The heroes went after them, but Team Rocket used a device to absorb electricity. Drew had Roselia use Solarbeam to destroy the device and repeated the attack, along with Pikachu's Thunderbolt, to blast Team Rocket away. During the end of the day, Drew and Roselia watched the fireworks in Slateport City. Some days after, May remembered Drew and Roselia, wanting to face against them in the upcoming Contest.
In Kanto, Roselia appeared less often due to the fact that Drew was catching more Pokémon. At some point during Drew's travels in Johto, Roselia evolved into Roserade and was shown in a flashback using Mega Drain against one of May's Pokémon. It also appeared along with Drew, Harley and Solidad watching May in the Wallace Cup.