Velocity beings is not appliable in any way. In order to get the velocity state commonly known is necessary before an energy supply, lol.
A non-energy being doesn't need to look like something.
For example, if you were a zebra, and you couldn't channel your energy, that means you would be dead. But not only that, if a predator ate you and they couldn't get any energy supply, that would mean you are not an energy being, at least, the way I think it is.
But, as you know, zebras need and utilize energy.
A non-energy being, first of all, would still be a being, yes. But one that, as it needs no energy, it exchanges that zero energy into zero energy, therefore, making nothing.
For me, the only non-energy being that we've got is void.