Mayl Sakurai is one of the supporting characters of the Mega Man EXE series, along with Roll.EXE. She is a close friend and classmate of Lan Hikari, Yai Ayanokoji, and Dex Oyama, and is the operator of Roll.EXE. Throughout the Mega Man Battle Network series, she acts as the love interest of Lan, and it is often hinted that the two have feelings for each other, much to the dismay of Dex, who also has feelings for Mayl. This love interest is paralleled by Roll and Lan's NetNavi, MegaMan.EXE, as well as Dex's NetNavi GutsMan.EXE, who has feelings for Roll. Unlike Mayl and Lan, however, Roll is more open with her feelings.
During the epilogue set 20 years after the events of Mega Man Battle Network 6, the final game in the series, it is revealed that Mayl and Lan got married and are living in Lan's old house with their son Patch.
Mayl is a young girl with pale skin, long hot pink hair, and brown eyes. Her outfit consist of an aqua-colored shirt, blue vest, pink skirt, black knee-length socks, and dark red shoes.
Mayl is an idealistic and intelligent person, who intends to keep Lan out of trouble. Throughout the series, she attempts to show Lan that she can protect him, just as he has protected her many times. However, it usually results in Lan saving her and Roll from danger.
In the anime, Mayl has developed a more hot-blooded personality, constantly scolding Lan for his immaturity. Despite this, her feelings for him becomes stronger as the series progresses. She is also shown to become very jealous whenever Lan is with another girl; examples include Princess Pride, who had developed a very strong, almost loving bond with Lan during her time in DenTech City], Shuko in Axess when she gets too close to Lan and Jasmine in Stream who she viewed as a rival for Lan's affection.
- In Mega Man ZX, a Mayl doll occasionally appears as one of the various toys found at Area H.
- Mayl's Cross Fusion animation is the same as Chaud's in MegaMan NT Warrior Axess except for the finishing pose, which more closely matches his in Stream. Also, she is the only member of the Cross Fusion Team that does not have a visor or a mouthguard while in Cross Fusion.
- Although Mayl has a Progress PET/PET III in Stream, her Cross Fusion shows her holding the Advanced PET, which is used in Axess.
- In Rockman.EXE Stream, like in the first season, she goes swimming in a pink swimsuit with a yellow line running up the center, this being a reference to her favorite color, pink.
- If the player goes to her house in the Mega Man Battle Network first game, there is a scene when Lan walks in on her while she is dressing. In the same game, MegaMan also says "Don't you feel weird in a girl's house?" if the player presses the L button while Lan is in Mayl's house.
- Mayl plays piano, with the electric piano being her favorite.
- She likes to shop.
- In Mega Man Battle Network 3, the background on her HP is the series main theme.
- In Mega Man Battle Network 5, a Mr. Prog on her home page says that Mayl has started writing music on her PC.
- A girl similar to Mayl appears inside of the piano monster in Powerpuff Girls Z's episode 19.
- Coincidentally, Mayl does piano lessons in the series, and the girl is within the piano monster in Power Puff Girls Z's episode 19.