|Level|| Tennis: Spectator only
Baseball: Teammate only
Boxing: Coach only
In Wii Party U, Millie is a Standard Mii.
- In Lap Happy, she is in 8th place with a time of 0:45.00.
- With a team composed of Mark, Dylan, and Carlo, he is in 8th place in Button Smashers, with only 5 points.
- Her Japanese name is Mirī (ミリー).
- In the data files of Miitopia, she's listed as Child.
- 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.
- Even though Millie uses a mouth that doesn't use lipstick, it is set to pink instead of the default orange color. This might be a remnant of an earlier design for Millie.
- According to internal data about CPU Miis, Millie's country of origin is North America.
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