Sonictchi (ソニックっち) is an adult Tamagotchi that debuted in Sega Saturn de Hakken!! Tamagotchi Park.
Sonictchi resembles iconic video game hero and Sega mascot Sonic the Hedgehog, particularly his pre-Sonic Adventure incarnation (or Classic Sonic, as he is called in Sonic Generations and Sonic Forces). He has spiky blue fur with a white face and stomach (which contrast Sonic's peach face and stomach), conjoined beady eyes, a small nose, and wears red shoes (which lack the white stripe and sole that Sonic's red shoes have). His official art shows him with only legs, but is seen with arms in-game, with round, white hands.
In Video Games
Sega Saturn de Hakken!! Tamagotchi Park
Sonictchi evolves from Cartritchi with perfect care.