A 2 second Google search reveals that he is indeed Australian, and seems to participate in Nerf related "tag" games. So a little of both, would be the answer.

That is an excellent name regardless. I thought it was made up until I tried searching for it.

I doubt they're related, but Dudefella automatically makes me think of a WoW trading card that Gabe of Penny-Arcade drew.

Dudefella is Gabe's WoW character, actually.

But yeah, that's where my mind went first, too.