Mamemametchi's appearance is similar to Mametchi. He has starry eyes, yellow skin, a large lower body, and long arms. He also has a large orange mame "cap" that covers the top of his eyes. When surprised, his eyes pop out of his cap.
Since Mamemametchi was born in ancient Tamagotchi times, his is smaller and shorter than a normal adult Tamagotchi of the present. He is about 2/3 the size of Mametchi, and is about the same size as Chamametchi (Mametchi's little sister), even though Mamemametchi is an adult Tamagotchi character.
Mamemametchi first appeared in episode 27.
Mamemametchi is from the ancient times of Tamagotchi Planet. Mametchi, Memetchi, Kuchipatchi, Lovelitchi and Telelin meet him when they traveled back in time, forced by the Kuchipatchi of Truth. He is poor but very loyal, polite and brave.