Sprout

Cosmo is Sprout's best friend. Cosmo is a chocolate roll. He wears a white hoodie, black shorts, and pink, green, and blue striped leg warmers. Cosmo is also a very kind, yet sometimes naive and gentle guy. He also has a cousin, Ginger (a gingerbread man).

Tunas are living cartoons made of ichor.
Ichor is a black, viscous liquid from which all thuns were created. Ichor itself is poisonous to humans, so it was stored in capsules; thuns are immune to it, as it's what they're made of. The ichor machines are large capsules, about two meters tall, and to fill them, you turn a red valve, and the ichor will flow through the pipes.
Maines are the main characters. Each event toon has its own main (Christmas toons have Bobet, Easter toons have Bessie, and Halloween toons have Gordy). But there are also regular maines: Astro (the moon), Pebbles (a pebble dog), Shelly (an archaeologist shell), Vi (a TV presenter), Dandy (Rainbow Flower and the face of the show), and Sprout himself.
The name of the children's show from Where All the Tunes Appeared is "The World of Dandy" or "Gardeview".
Children often come to Gardeview, because this building is often used not only as an animation studio, but also as an entertainment center for children, and maybe even as a kindergarten. In general, children often run around Gardeview with their favorite cartoon characters.

Sprout is a very caring and kind Toon. Sometimes he's a bit too much. But despite his kindness, Sprout isn't as naive as Cosmo. Sprout can stand up for himself and make himself heard, and he doesn't have to talk to people he doesn't care about or who make him uncomfortable.

Sprout is an anthropomorphic strawberry. He has a red body and a strawberry-like head. Sprout's hair is lush, green leaves that often look disheveled, so he wears a pink plaid scarf and pulls it back into a ponytail. He wears a maroon sweater, a pink and white scarf (because he's often cold), and faded jeans. Over the sweater, he wears a kitchen apron with a dandy face (because it's merch). Sprout has freckles shaped like seeds on his face.