Multiform vs. OIHID

[Agent 537]

This one is proving to be a thorny issue in my circle. In what circumstance would you choose one over the other? For every instance we could think of to illustrate one or the other, we were able to come up with logical arguments such that the opposite one could apply as well.

For instance: Thor, The Hulk, Captain Marvel (DC), The Thing (when he could transform), The Creeper, Etrigan the Demon, even (maybe) the Power Rangers. All of these have a normal form and a super form. So, which is right?

Which IS right? How does one choose between these two? How have YOU distinguished the difference?

[Steve Long]

I don't have any specific standard other than gut feeling. I'm not intimately familiar with every character you list, but I'd probably call Thor, the Hulk, and the DC Captain Marvel OIHID in most games I run. Multiform I think works better for characters for whom changing shape is a defined part of their powers, as with, say, Changeling or Snowbird.