Having so much backstory isn't necessarily bad, but it does highlight the discrepancy between backstory content and personality content. If he's been through so much, surely there must be more to him as a character?

Given what he can do, I would be more inclined to say his Specialty is 'Jack-of-all-trades' or 'Adaptability' rather than ranged attacks only.

I have just a couple questions about his power. Is the only power he can absorb elemental? Would that mean his absorption just doesn't work on targets without elemental powers like, say, Tora? How many powers can he stock at once? Is there a time limit before powers expire or something?