Jeff

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

Wii Sports Club
In Tennis and Baseball he is at Grade ★1. In Boxing his Grade is only 3.

Wii Party U
In Wii Party U, Jeff is a Master Mii.

Trivia

 * You can earn his badge for every 500 edits you make on "Wii Sports Club" articles.
 * His Japanese name is Jefu.
 * Jeff is also a name for the scientist boy from EarthBound.
 * He appears in Splatoon 2 as an Octoling.
 * Jeff was featured in a Japanese promotional video for Streetpass Mii Plaza. In it, he states he is from America.