Definitely the art, long ago, my classmate accused me of copying "adventure style" in a drawing. Being the perfectionist I was, I demanded she tell me just exactly this "adventure" was and how my ORIGINAL drawing related to it. As soon as she showed me a picture I was hooked.
What i love about adventure time is when Ice King tries to steal PB and ends up getting beat up by Finn and Jake. But my favorite characters are Marceline and Marshall Lee. I love supernatural stuff.
I liked AT cuz it reminds me of the past cartoons that I used to watch like Courage the Cowardly Dog and Ed, Edd, n Eddy. It has a slight edge too it that some adults can appreciate too. I mean, I'm 24 and I'm watching it.