Can you imagine someone actually having the power to thrown oatmeal? I mean, oatmeal they make same as plasma or fire, just oatmeal instead!

Of course, some people are immune to their own powers so the actual plasma/fire idea might not work too well all of the time.

Because, you know, the following scenario would not make me too happy.

Jan: < lands on the head of Evil Flame Villain > "You want to get me, come flame your own head!"
Evil Flame Villain: "OK, I am the mighty Flame Villain and I cannot hurt myself with my own fire!" < flames head >
Jan: "Shit!" < gets burnt to a crisp and dies >