Not to be confused with Beginner Difficulty, Beginner's Archery Area or Beginner's Wakeboarding Area.
The Beginner of a sport is the lowest-ranking Mii of that sport and usually the first to face, the exception being Tennis from Wii Sports where they are played against if the player loses against the first encountered.
Wii Sports
Tennis: Matt and Miyu (first encountered), Hiroshi and Shouta (Beginner)
Baseball: Elisa's team (herself, Emma, Luca, Akira, Matt, Kentaro, Abby, Silke, and Jessie)
Wii Sports Resort
Excluding cycling, beginners in Wii Sports Resort have a skill level of 11-15.
Swordplay: Ryan
Basketball: Miguel's team (Anna and Takashi)
Wii Sports Club
In Wii Sports Club, the Beginners are always at level 1.