CPU

A CPU is a Mii who is controlled by a computer. They appear in Wii Sports, Wii Sports Resort and Wii Sports Club games as the players the player must face. In games that require 2+ people, CPU Miis make a team. The better the skill level of the CPU is, the more skilled he/she is. Miis that are above 999 points are known as Pros.

Wii Sports
In Wii Sports, there are 60 pre-made CPU Miis that can be your opponents: 30 boys and 30 girls. They appear as opponents in Tennis, Baseball and Boxing. In this last sport, not all girls appear. In Bowling, they can appear if you don't have enough Miis in your Mii Plaza or Mii Parade, playing in the other lanes.

Wii Sports Resort
In Wii Sports Resort, in addition to the 60 CPU Miis from Wii Sports, there are 40 new CPU Miis, 20 boys and 20 girls, making a total of 100 CPU Miis that can be your opponents. You play against them in Swordplay, Table Tennis - Match, Basketball - Pick-Up Game and Cycling. Again, they appear in Bowling, alongside your own Miis, no matter if you have enough Miis in your Mii Plaza or Mii Parade. They also appear as spectators in various sports, such as Table Tennis and Basketball.

Wii Sports Club
In Wii Sports Club, 111 new CPU Miis replace the CPU Miis from Wii Sports Resort, sporting the full range of the Wii U's Mii Maker's updated feature set. Some of these Miis only appear as teammates in Baseball and don't play any other sport.

Trivia

 * CPUs from the Wii console appear to have been saved in the system's internal memory, but are hidden from the user's system. This may suggest why they disappear from audiences and other graphics if the player has more than 20 made Miis.
 * In Baseball, CPU Miis will play on a human player's team if they don't have enough Miis in their Mii Plaza or Parade, but will still be controlled by the human player rather than the computer like how they usually are.
 * CPUs are also promotional Miis, appearing in other games, several artwork and promotional images. They likely are assets from a central resource within Nintendo and not created specifically for Wii Sports.
 * They aren't used in art for the 3DS game Tomodachi Life and subsequently, the mobile social app Miitomo. Those use their own set.
 * The 3DS game Miitopia will auto assign townspeople roles with the Sports Club Miis if Spotpass is turned off.
 * Miis from Wii Sports Club are seen in some promos and advertisements for games where Miis can be used, such as Mario kart 8 or Super Smash Bros. for Wii U.
 * CPU Miis are not impossible to recreate, and can be made with good effort and a lot of time. However, the Wii U CPUs are harder to create than the Wii CPUs for obvious reasons.
 * Aside from being played against in Wii Party, CPU Miis can also appear as spectators, background characters, and game/minigame elements (For example, a Mii on the Bingo card or a Mii that cheers or boos for a player), although this largely depends on how many Miis the player has in their Mii Plaza.

All CPU Miis from Wii Party
From left to right :
 * First line : Haru, Saburo, Miyu, Jessie, Nelly, Andy, James, Patrick, Abby, Tatsuaki
 * Second line : Julie, Chika, Tommy, Mia, Sarah, Alex, Shohei, Mike, Miguel, Gwen
 * Third line : Nick, Abe, Ashley, Megan, Chris, Helen, Hiroshi, Maria, Ai, Shouta
 * Fourth line : Siobhan, Tomoko, Luca, Ian, Sota, Barbara, Steve, Vincenzo, Yoshi, Anna
 * Fifth line : Ryan, Takashi, Marco, Hiromi, Cole, Emily, Michael, Naomi, Elisa, Oscar
 * Sixth line : Misaki, Holly, Fumiko, Ren, Kathrin, Ursula, Giovanna, Gabriele, Fritz, Daisuke
 * Seventh line : Rin, Jake, Greg, Keiko, David, Shinta, Rachel, Hayley, Midori, Sandra
 * Eighth line : Theo, Gabi, Silke, Rainer, Kentaro, Martin, Eduardo, Susana, Shinnosuke, Eva
 * Ninth line : Lucia, Matt, Akira, Pablo, Tyrone, Victor, Eddy, Hiromasa, Sakura, Stéphanie,
 * Tenth line : Pierre, George, Yoko, Marisa, Asami, Emma, Steph, Jackie, Takumi, Alisha