On the first place, it is because he wants revenge for his father's death and also because of his high morality.
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Daredevil.
Philip mcondy
Because he was doused with hazardous waste when he was an adolescent.
2 ways: 1. either buy them when your rank is higher than T.I's gun inventory (at least star rank) or 2. find them when you get access to the castle again to fight fawfull
Daredevil is unlocked by finding 5 Daredevil Action figures scattered around the game. There are more than needed however, so don't freak if you miss one. You can also unlock him by using cheat codes, but I'd prefer the old fashioned way. You can find a list of their locations in the strategy guide or even the internet.