Was just looking at Arkellin's PBF and noticed the following:

Affinity
Air 10
Earth 5
Fire 5
Water 5
Ice 10
Ooze 5
Lightning 5

Any ideas where all the affinity comes from? So yes he was an arial and so it would only take him 7 points to have a 10 air affinity, but that still leaves 8 points of affinity that had to come from somewhere. I noticed he took the extra affinity edge (possibly more than once, although it was only listed once), and I'm sure he got rewards for being leader and all that, but 8 extra affinity points?

Not saying I don't think it's legit, I'm just wondering if there are ways to get extra affinity other than the obvious?