May's Beautifly (Japanese: ハルカのアゲハントHaruka's Agehunt) was the second Pokémon acquired by May in her travels through Hoenn, and the first she caught in the wild.
In the episode A Corphish Out of Water, May's Wurmple evolved into Silcoon while Jessie's evolved into Cascoon; Jessie believed hers was a Silcoon as well.
Four episodes later, in Seeing is Believing!, Jessie's Cascoon evolved into Dustox, while May's Silcoon evolved into Beautifly.
In the episode That's Just Swellow, May used Beautifly as her Pokémon in a PokéRinger competition. James, using Dustox, defeated Beautifly in the competition, but Dustox eventually succumbed to a last-minute defeat when Ash's Taillow evolved into a Swellow.
As a Wurmple, it was very greedy. It would gorge itself on food and then fall asleep, unlike Jessie's more sedate and well-behaved Wurmple. When it evolved to both its latter stages, however, it became more calm and mellow.
