ChaMametchi

From Tamagotchi Wikia

ChaMametchi (ちゃまめっち literally, Chiyamametchi. ち-CHI ゃ-YA ま-MA め-ME っち-TCHI) is the younger sister of Mametchi that was first featured on the Tamagotchi Familitchi V5 and then appeared on the Tamagotchi Celebrity V5.5 and also the Tamagotchi Music Star.She appears in the Tamagotchi film, Tamagotchi: Dokidoki! Uchuu no Maigotchi!?. You can obtain her by doing the following...

Get Mametchi. Raise Bonding to 100%. Breed with Chantotchi. Parents become PapaMametchi and MaMametchi. 2 eggs, hatch into 2 Mimifuwatchi. Oldest becomes Mametchi, youngest becomes ChaMametchi or train Belltchi, Tororotchi, or Sakuramotchi on the first option. Please note, that this is for V5/Familitchi. To get ChaMametchi on V6/Music Star Marry Mametchi to Chantotchi or get a girl and then treat it good, never let the happy and hungry level go to 0, and always keep it's stress level low.

Chamametchi is also a crybaby in the tv show Chamametchi in one episode Mametchi's friends don't like Mametchi's new pen that writes math questions but when Chamamechi fiddles with it it makes food for Kuchipatchi and swirls Memetchi's hair so that they come to appreciate the pen.