User blog comment:BobaFett2/Inferion Discussion/@comment-4622249-20130831210318

I'm thinking it's the difference between Stromlings and Dark Ronin. The majority of the Maelstrom army was solid; the Ronin, for the most part, were not.

Similarly, Most of the Korri army is physical, while certain members, such as Fire Wraiths, are not.

I think it would be easier for Korrigahnn to create a physical being with set functions rather than breathe life into fire. I know this contradicts what I said a few months back, but I think this works better. Just as it's difficult for us to model and code a fire elemental, it's probably more complex and a a little more challenging for Korri to create living fire than a physical being with a directive.