@gothpuppy: That backstory's...I'm not sure how to put it, but um...it just seems a little odd to me. Also, why is Raiju (not actually a type of thing as far as I know, from everything I've read involving him, he's Raijin's equally imaginatively named pet) named Fenrir? That just seems odd to me. Also, um...please tell me "if he sees one cry though he goes on a manhunt to remove the culprits head" is an exaggeration...Other than that, he seems fine, but I don't think I can accept him as is.
@Wormgod: "Invisibility potions and stuff" is...kind of really vague. I can't accept the character as it is right now.
@Athoriel: So...he grew up in a place that idolised contractors...but was shunned and feared when he became one? I'm not sure if I'm reading that right, but it seems really odd to me. The powers look fine, but I don't think I can accept it at the moment.
@Marumasa: So, why's he an outcast? Is it just because he's socially awkward, so he doesn't make many friends or is there something else? As far as his abilities go, I'd say being able to summon Gungnir would be an ability exclusive to a contract with Odin himself.
@Aqua: He looks fine for the most part. My main concerns are...well, that "water manipulation" might include throwing an entire lake at someone (which...might be a bit too high scaled for an attack from a non-fused contractor) and that it might extend to the water in someone else's body. If it doesn't and if there's some kind of limit on how much he can control, then that's fine. I'm a bit hesitant about the weapons too, since I'm not entirely sure how they're related to a dragon.