First of all welcome to DA, second please take off some of that artwork. Deviantart is about making art, not taking art. One of the artists, left DA. But some of those Adventure Time pictures belong to people here on DA and its REQUIRED you get permission.
Some people don't care if you upload their work. But there are those that do and you need to take that into consideration. I have to agree with the others. This is Deviantart, not Photobucket/Facebook or even Tumblr which requires you also properly source art.