That's why Adventure Time is such an amazing show. On the surface, it looks like a nerdy, quirky goofy little show...
but then the episodes get
intensely dark. Like why the Ice King is the Ice King. And the episode where the gender confused Cookie
commits suicide because he can't be a princess (ending with him in a mental institution). Not to mention all the fridge horror the show implies. This cute little show about sentient candy and rainbow unicorns is basically a post apocalyptic wasteland that happened after the "mushroom war," which got its name from mushroom cloud, basically straight out saying the Earth was destroyed by a nuclear holocaust.
Adventure Time! Come for the cute quirkiness, stay for the horrifying implications.