Pastime Inventing/Sports/Studying Favorite color Yellow Tamagotchi School class Upper Elementary He can make anything in a short time, but can fail. Mametchi is tone deaf and sings horribly without the Melody Charm. Stage-Adult. Mametchi is the best Tamagotchi character you can get. You have to give your toy the best care to get him. He is a pale-yellow rabbit with dark blue ears and appears in Mario Kart Arcade GP 2. but he is a Z fighter but a best friend of Goku. (Source: Wikipedia)