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.
Despite weighing over 62 lbs., Beautifly has been seen landing on May's head without any ill effects, similar to Ash and Hippopotas.
The red spots on its wings suggest that Beautifly is a female, because they have small "dents" in them. However, like a few of the other Pokémon owned by main characters such as Jessie's Wobbuffet, this evidence is not conclusive because its debut in this evolutionary stage was before the introduction of Generation IV.
