Cosmo is a brown pastry resembling a chocolate Swiss Roll. He has white icing drizzled in a squiggly pattern on the top of his head, which is paired with 6 cyan, pink, and lime star-shaped sprinkles as freckles. He wears a white, sleeveless hoodie with black drawstrings and a white hemming on the bottom. He has striped socks the same colour as his sprinkle freckles, the socks completely cover his legs. Cosmo has confirmed star sprinkles on his cheeks.