|Level||Tennis: Spectator only
Baseball: Teammate only
Boxing: Coach only
|CPU Rank||Standard Difficulty|
She only competes as a Baseball teammate and appears as a spectator in Tennis and a coach in Boxing.
In Wii Party U, Millie is in Standard Difficulty.
- In Lap Happy, she is in 8th place with a time of 0:45.00.
- In Demolition Row, she is in 7th place with 80,000 points.
- With a team composed of Mark, Dylan, and Carlo, she is in 8th place in Button Smashers, with only 5 points.
Names in Different Languages
Japanese: ミリー (Mirī)
- According to the Wii Sports Club files, Millie's Internal ID is 060.
- In the data files of Miitopia, she's listed as Child.
- Millie was featured in a promotional video for Super Mario Maker 2's Course World. In the video, she has a course named Aquarium Aquatics.
- In the same promotional video, Millie's nationality is revealed. She is shown to be North American.
- She is one of the three Miis that appear in the artwork of Mario Chase from Nintendo Land, with the other two being Skip and Alice.
- Millie appears in promotional material in the Super Smash Bros. series. In Super Smash Bros. for 3DS and Wii U, she is used as the model Mii for the Tails outfit.
- In her Wii Party U artwork, she seems to be playing Sitting Pretty with Juliette, Daisuke, and Steven.
- She appears on the Nintendo Land disc art, where she is a purple toad.
- Millie is left-handed.
- Her Mii data file shows that even though Millie uses a mouth that doesn't use lipstick, it is set to pink instead of the default orange color. This could be a remnant of an earlier design for her.
- Millie can be seen in the Clubhouse Games minigame president, under the name Arya.
- Her height value is set to 28 and her weight value is set to 83.