Adam Maxwell Burton, known professionally as Maxwell Atoms, is an American animator, screenwriter, storyboard artist, and voice actor. He is the creator of the Cartoon Network series Grim & Evil and its subsequent spin-offs, The Grim Adventures of Billy & Mandy and Evil Con Carne.

Grim & Evil is an American animated television series created by Maxwell Atoms for Cartoon Network. It consists of two segments which were eventually spun off into their own series, The Grim Adventures of Billy & Mandy and Evil Con Carne.