Champion

A Champion is a player who is the final CPU faced in a sport, whose skill beats the rest. Also, in Wii Sports Resort, a rock guitar will be added when in the VS screen music when facing the Champion. They have the highest skill level in a sport. After the champion is beaten, the player will face a random CPU (except in Wii Sports tennis).

LucíaDACot — Lucía, an example of a Champion.

Wii Sports

Elisa and Sarah - Tennis

Matt - Boxing

Sakura - Baseball

Wii Sports Resort

Excluding cycling, champions in Wii Sports Resort have a skill level of 1496-1500.

Matt - Swordplay

Lucía (formerly Yoshi) - Table Tennis

Tommy's team - Basketball

Anna - Cycling

Wii Sports Club

Alice and Barbara - Tennis

Pit - Boxing

Enrique - Baseball

An Example of a Champion

If you ever get to one of the champions on Wii Sports Resort or Wii Sports Club, there will be the word Champion on their side of the screen, but in Baseball in Wii Sports Club, it will say Champions.

Trivia

In Wii Sports, when the player's Mii defeats the champion in a sport, a message will be posted to the Message Board saying that the player's Mii defeated the champion.
All champions in Wii Sports Club have the same mouth.
The champions of Tennis and Boxing are also your coach in the trainings.