Ringotchi, Makiko, and Young Mametchi discuss Mametchi at a Secret Mametchi Fan Club meeting.
The Mametchi Fan Club is a club in the Let's Go! Tamagotchi series. The fan club consists only of admirers of Mametchi. However, he is unaware of it. It doesn't seem to appear in the 2009 Tamagotchi! anime or the movie. However, it is mentioned near the beginning of Tamagotchi: Happiest Story in the Universe!
The leader is Young Mametchi, who is also the only male in the club. During meetings, the members discuss admirable deeds they have witnessed. These meetings are usually held after Tamagotchi School.