Gale doesn't seem to really want to help others, he gives some "approves" when you do, but he never really talks about it outright. He comes off as someone who seeks [Something] and this lead him down a dangerous path.
He mostly talks about magic and knowledge, and the [Something]. Heck at one point he even suggest stealing (Only to roll that back if you point out it's not cool to steal)
To me he's the "crazy mage" archetype more than anything.
Wyll made a pack with a devil, more or less, and tries to atone for it by doing good. All the same time knowing he only has this power because of his pact.
He also doesn't actually seem to only do his heroics for all the right reasons though.
If you think they are just "run of the mill" then it seems to me you haven't gotten further into their story arch?
They're not that interesting to pursue, also I have Gale in my party for all of chapter 1 for my plays. There was never any spot for Wyll, plus his story is a bit buggy, I couldn't see half of it when I was playing with him in my party.
Edit: Just adding, I think the problem lies in my feeling uncomfortable asking party members questions because of how shirty they get when you initiate conversation with them. So I just wait for them to speak to me, perhaps if this is addressed in the writing, then I'll be able to get to know Gale better. ATM though, everyone has an aversion to questions, so I just keep to myself :X.
