Dean & Castiel
Dean Winchester: The new kid his mom was killed when he was a smaller, and all he haves is his baby brother, and dad. his dad is still looking for his wife's killer so instead of having a normal childhood deans was full of his dad teaching him how to fight, and protecting his brother Sammy.
Castiel Novak: He is the weird new kid with nobody. he's basically a baby learning about the real world. nobody doesn't even know who he is or where he came from, but he have's one purpose of being there, and that was Dean Winchester.