I recommend this show. it's hella-raaaaaaaaaaad and it deals with a lot of mature, real-life issues (sexuality, consent, mental disorders and heteronormativity to name a few) in really clever, subtle and level-headed ways that don't condescend to the show's younger audience. The main characters are thoroughly fleshed out and believable (despite the premise), it has a nice visual style, and it's got one of the most fun Saturday Morning Cartoon-type villains I've ever seen. Added bonus, each episode is only eleven minutes long, so you can either marathon it or take it in little bits and pieces.

If you're interested, Cartoon Network has the whole show up to current uploaded here and it is free to watch. :>