Prefacing this with the fact that most of this may not make sense, and it's pure crack.
Sam Winchester - The Half Brother.
Sam's well okay. Adam's has mixed feelings when it comes to Sam. While he does think they could get along, and they sort of do, a lot of the time, his bitterness towards John, bleeds in, which results in snarkiness. And well there's the whole Sam dragged me into hell bit.
Lucifer Lollipop - The Devil
How Adam feels towards Lucifer should be obvious and not ever need an explanation. And it'll never change EVER.
Treating Lollipop to blueberry muffins notwithstanding
Dave - The Harry Potter
Harry Potterness and all his oddness aside, Dave seems like a cool guy. He like muffins after all. How can Adam not like the guy?
Hime
She said she's the mayor of someplace, and that she'll protect him. Adam's still trying to figure out why.