Maxwell is the main protagonist of the Scribblenauts series. Maxwell is one of the sons of Edgar and Julie. He, himself, is similar to a scribblenaut, and he appears to be human-like as the rest of his family does. He uses a special notebook in order to summon objects into his world. He has appeared in all Scribblenauts games to date, and in the Steam-edition of Scribblenauts Unlimited, he appears as a Steam Trading Card. Maxwell is recognized as a helpful being, and he is never portrayed as an evil/bad character. He does not actually talk in-game, but he appears to have monologue in the small amount of cutscenes in Scribblenauts Unlimited. Many creatures are hostile towards him, but there is also a vast amount of creatures that will protect Maxwell or appear neutral to him. Objects can be applied to Maxwell in Scribblenauts Unlimited and Scribblenauts Unmasked. Adjectives added can potentially change the hostility or fear level against him by other creatures.
His goal throughout all of the games is to collect all the Starites, similar to a Scribblenaut. At the end of Super Scribblenauts, Maxwell must fight against his evil clone, and in Scribblenauts Unlimited, he must collect Starites in order to save his sister Lily from turning to stone.