Genders and Releases:
Cosmotchi has a space-themed appearance. has a light blue face, starry eyes, and green cheeks. He has a blue "hat" on his head similar to Mametchi's, except it is curvy at the bottom and his ears are smaller. His body is blue with a yellow bib and there is a wide white plate around his neck.
On Virtual Pets
Cosmotchi evolves from either toddler with the "intelligence" skill.
Cosmotchi can evolve from either Mitsumarutchi or Turtletchi from perfect care. His adult evolution depends on care mistakes and personality training. As the best possible teen, he is the least sensitive to care mistakes, and is therefore more likely to evolve into Mametchi, Righttchi or Knighttchi.
Cosmotchi's name comes from the combining form 'cosmo' (short for "cosmos"), which can mean 'outer space'.