CRT Filter by Tealcrows - Link
Planet backgrounds are from Kirby Super Star Ultra, Kirby Mass Attack, Kirby and the Amazing Mirror, Kirby Squeak Squad, etc all nabbed from the Spriter's Resource.
The Cinnaverse has many inspirations, but the biggest inspiration and influence is the Kirby series! It takes some inspiration from Pokemon and Hollow Knight as well, and my general interest in space and aliens.