Kuchitamatchi

From Tamagotchi Wikia

Kuchitamatchi (くちたまっち Kuchitamatchi) is a character who has appeared on the original Tamagotchi and has had many appearances in the franchise since. In classic form, Kuchitamatchi is a teen character with no defined gender; however, his interpretation in recent years has him as a child character, and was later given the gender status of male.