Sheri

Sheri is a playable character in the game Mario Power Tennis for the Game Boy Advance. She is one of several human characters created exclusively for the Mario Tennis series. Sheri is also an all-around-type character. Her doubles partner is Willy. Sheri and Willy play and defeat Elroy and Tori in semifinals at the Island Open. After beating Elroy and Tori, they go on to play Clay and Ace.

Although she expresses the utmost confidence in Willy (and for good reason), the two of them do not act like a couple, unlike Elroy and Tori.