Funyn I was reading the last comment when Wyll spoke to me about his reputation and dragons, etc...
It's true I can't believe this guy can be this famous with THIS level xD
Wyll and Gale talk about not being as powerful as they used to be because of the tadpole messing with their magic. Playing a once mighty being who was brought low by circumstance and must build themselves back up is a somewhat common PC background.
I'm also not entirely sure Wyll is being honest about his achievements. He very much comes off as someone desperate to be a seen as a hero. So desperate he made a pact with an evil being for the power he needed to become a noteworthy hero in the first place.