This Mii is canon. That means this Mii actually exists in the Wii Sports/Wii Sports Resort/Wii Sports Club games.

Title None
Gender Male
Favorite Color Black
Level Tennis: Unknown

Boxing: Coach only

Baseball: Teammate only

William is a CPU Mii from Wii Sports Club and Wii Party U. His Total Skill Level is 51.

Wii Sports Club

He is a Baseball teammate and does not compete in Tennis or Boxing. He also appears as a Boxing coach.

Wii Party U

In Wii Party U, William is a Master Mii.


  • His Japanese name is ウィリアム (U~Iriamu).
  • He is the only CPU Mii in the entire series whose name starts with W.
  • He is the only Master Mii from Wii Party U with the regular glasses.
    • He and Barry are the only Master Miis in Wii Party U to wear glasses.
  • Merrick previously had this Mii's name in a Streetpass Promotion.
  • He and Bo-Jia are the only Wii Party U Master Miis to have a mustache but no beard.
    • Neither is an opponent in any sport.
  • There is a CPU Mii from Wii Sports Club with the Spanish translation of his name: Guillermo.
  • According to internal datas, he's American.
Community content is available under CC-BY-SA unless otherwise noted.