Marius

Marius is a CPU Mii from Wii Sports Club and Wii Party U.

Wii Sports Club
Marius does not appear as an opponent in Tennis or Boxing. He can only be seen in Baseball and is a Baseball teammate.

Wii Party U
In Wii Party U Marius is an Advanced Mii.

Trivia

 * You can earn his badge for making 250 edits on "Baseball Teammates" articles.
 * Marius is pictured in many official Wii Party U artworks, along with Cheng-Han, Haruka, and Ilka. In these artworks he is player 3.
 * His Japanese name is Mariusu (マリウス).
 * He is the only Advanced CPU whose favorite color is black from both Wii Party and Wii Party U.
 * Marius appears in the Super Mario Maker 2 Direct in Course World. In it, his stages name is "Clown Car Coin Battle" It also revealed his nationality. He's French.