Finn reminds me a whole bunch of Maxwell, the main character of Scribblenauts The Game of Creating (and Destroying bwuahaha) things to solve puzzles. Like, Maxwell has a little hat thing, but it's red and he has a dot-dot-curve face like Finn, too. His world is basically a fantasy land (seeing as how anything he writes in his handy dandy notebook comes to life). He doesn't have a partner in crime, but if you type Maxwell into his notebook, an evil version of him pops up and starts making weird things like a metaphysical neurotic grenade launcher (technically just a fidgety gun that shapeshifts when it dies). The game is fun and I like harrassing the people I conjure.
But yeah, the whole concept of the game and Maxwell remind me of Adventure Time and Finn.
But yeah, the whole concept of the game and Maxwell remind me of Adventure Time and Finn.