User blog comment:SolZen321/What are UItras made of?/@comment-5895493-20131022085909

My theory, is that Ultras have similarily identical organs to humans, bones and all. But what about the rest of the space in their body? It's probably filled with light. Or the "blood vessels" in their anatomy probably carry some form of light. Specium is also another probability, my theory about Specium is that it's produced in thier bodies, probably because their cells have been mutated by the Plasma Spark to contain Specium in them. They have some way of channeling the specium into their beams, why it must be in a "+, L or X" is unknown.

The Plasma Spark or Sun is also something to ponder about, after all, it mutated the human-like beings of M78 into what we know now, the Ultras. It probably contained some form of element or Specium inside. Also, what you said about the Plasma Spark "changing the cells quickly" is an interesting concept. If the cells did't mutate quickly, the white blood cells in them would probably fight off the new cells, causing the Ultras'.... demise.

Overall, your theory is quite awesome to hear about, I really like it. Keep up the good work :)