Caillou (pronounced "kai-YOU") is a Mii from Wii Sports and Wii Party.

Wii Sports[]
He is a horrible Mii.
In Tennis he is super bad with a skill of -1.
In Baseball he is also super bad with a skill of -1.
In Boxing he is really bad with a skill of -10. If you hit him, he will cry as he is spoiled.
Overall, he is one of the worst Miis.
On July 2nd, 2019, He was erased from wii sports, Wii Party, and wii sports resort.
Wii Party[]
In Wii Party, Caillou is an Absolute Beginner CPU.