May is the female protagonist or main rival of the Hoenn based Pokémon games; Ruby, Sapphire, Emerald, OmegaRuby, and AlphaSapphire. She may be a descendant of
Irida, but it's not confirmed.
Game canon
If chosen as the player, May moves from Kanto to Petalburg City with her mom, due to her father,
Norman, becoming a Gym Leader. She then picks a starter Pokemon and gets a Pokedex with
Professor Birch, along with her rival
Brendan. She goes and gets Gym Badges, stops Team Magma and Aqua, saves the region from destruction, and eventually beats the Pokemon League.
If not chosen as the player, she is instead the rival and the daughter of Professor Birch instead of Norman.
Pokémon Masters EX
May, in Pokemon Masters EX, is the daughter of Professor Birch, and came to Pasio to compete in it's League. She loves fieldwork and explores Pasio often to learn about the artificial island.
Her partner in this game is Mudkip, which can evolve into Marshtomp and then
May's Swampert.
During the Spring 2021 season, she put on a special outfit and formed a bond with a Lopunny.
During the 2022 anniversary season of Pasio, she joined a bond with a Latias, and wore a special outfit.
Pokémon the Series
May is a Pokémon Coordinator from Petalburg City. Starting off her journey, May did not like Pokémon very much. She originally wanted to be a Pokémon Trainer so she could travel and see the world. On the day she got her starter Pokémon, Torchic, May met Ash and like Misty was impressed by Ash's personality. She traveled with Ash, her brother Max and Brock until she decided to part ways an compete in the Johto region.
Having decided to focus on being a Pokémon Coordinator instead of a Pokémon Trainer, May experience great success during the many Contests she entered. She has competed in the Kanto and Houen Grand Festivals as well as the Wallace Cup where she reached the finals only to loose to Dawn.