*May is a young and energetic Pokémon Coordinator who is currently travelling through various regions to compete in Pokémon Contests. She started her journey traveling throughout the Hoenn region accompanying Ash Ketchum and Brock, along with her brother Max. On the way to the Grand Festival, she met Harley and Drew. When Ash and Brock left for Sinnoh, she goes to Johto alone without Max. She appears in a few episodes of Pokémon the Series: Diamond and Pearl where she traveled to Sinnoh to compete in the Wallace Cup. She reappears in a flashback in "The Dream Continues!".

May is a skinny girl of average height with long, chocolate-brown hair that has a single fringe at the center with three edges secured by a red and white bandana. She has blue eyes with long eyelashes with her single fringe on her brown long hair is nearly identical to Norman's (May's father).

She wears a red short-sleeved shirt with a navy blue semi-circle on it, a yellow fanny pack, white gloves with navy fingertips, a white mini skirt over dark blue cycle shorts, and black ankle socks along with red shoes with black and yellow stripes.

She is wearing her Emerald-based outfit. This is a sleeveless orange tunic with a black collar, white gloves with black fingertips, and white pockets and stripes over black cycle shorts. She also has a mint green fanny pack, a green and white kerchief, the same black ankle socks and orange, white and black shoes. Overall her outfit style was similar to her previous one.

Her most common swimsuit in this series is a yellow bikini with boy-short bottoms, but she has also worn a green bikini.

In her cosplay as Nurse Joy, she wears a pink mini-dress, white dress coat, a nursing cap with a pink cross, and white Mary Jane flats, basically the outfit worn by Nurse Joys in the Kanto, Johto, Hoenn and Sinnoh regions. In the Diamond and Pearl series, she was shown wearing orange and white pajamas.

In Pokémon the Series: Diamond and Pearl, May wore a special outfit for one of her contests, namely the Wallace Cup. This outfit is an Arabic-themed pearl-pink veil which has a green gem at the top, pink top with saffron borders and heart on the chest area, lilac-purple long skirt with a pink fabric in her waist, saffron-colored necklace with a red heart-shaped gem, and brown flip-flop shoes with toe rings. In this outfit, her entire midriff and belly button are uncovered.

Despite her beauty, May is a sweet, very kind-hearted, optimistic, energetic, cheerful, and beautiful girl, who would love to eat desserts, try different foods in every town she visits and would help people in need. Like Misty, May can get very angry and hot-tempered at times when disagreeing with either her younger brother Max or with Ash Ketchum, but May is able to overcome her fear of Bug-type Pokémon but was also was more patient with her friends. However, she can get very sad, especially when she loses a Contest, but does her best to prevail. She is also shown to have a side for romance, though on rare occasions. However, she became angry at her Munchlax because it was eating food that belonged to someone else and ran off when she didn't keep an eye on it, she had Max give Munchlax "pink surprise" in order to stop Munchlax's appetite and prevent it from eating.

At the start of her journey, May was very much the opposite of Ash. While he was eager to begin his journey as a Pokémon trainer, May didn't like Pokémon as she only wanted to start her journey just so she can travel and visit places. However, her encounter with Ash and Brock changed that and her love for Pokémon began to grow steadily. She was able to find a new and different goal with Pokémon by becoming a Pokémon Coordinator and competing in contests, by the time her journey with Ash and co came to an end, she set off for Johto to compete but also take on any new challenges she faced.*