Adventure Time is the canonical 2010s Cartoon Network aesthetic: saturated pastel-candy color married to thick black outlines, bean-shape characters, and Land of Ooo whimsy. Pendleton Ward's series ran ten seasons and seeded a whole wave of indie animation that followed it.

As a design system it leans populist and warm — cream pages, candy-pink panels, mint and cyan accents — and trusts a single heavy black line to do the structural work. The result reads playful but legible, cartoon but precise.