Sprout

Cosmo is 176 centimeters tall, with dark chocolate-colored curly hair with white streaks at the bangs and nape, and amber eyes. He has three small stars on each cheek, each in light green, light blue, and soft pink, which can also glow in the dark (these aren't decorations, but part of his appearance). His skin is dark (unlike Sprout, who has fair skin). He always wears long socks in the same colors as the stars on his cheeks (many think they're stockings, but the colors themselves are soft blue, pink, and light green), his white hoodie with connected pockets and a hood, a matching bracelet with Sprout (which he made for him), and two star-shaped hair clips in light purple and soft yellow. He can also often be seen wearing the same shorts (even in the fall and sometimes even in the winter), but no one knows why he wears them, fingerless gloves under a hoodie and matching socks, and bright red sneakers.

Sprout is quite tall – 187 cm – and has green hair with hidden red highlights and matching tips. His hair is straight and just below his shoulders. He has the rather rare condition heterochromia, which combines green, brown, and blue in both eyes, but their primary color is gray-green. He also has prominent freckles on his cheeks.
He often carries his custom headphones, which fit over his head, a black messenger bag with a pair of badges and a keychain shaped like a fluffy strawberry. He's often seen wearing jeans or denim shorts (depending on the season), a white t-shirt with a printed design and red sleeves, a burgundy plaid shirt tied at the waist, and white and black sneakers. He also almost never takes off his matching bracelet with Cosmo, which his friend made, and sometimes wears a couple of multicolored rings.