If they had had no greater feats than simply lacking Energy/opposing it, I would've said it was simply Immunity to Info manip type 2, but if it goes to this extremes, then this would be more accurate:
Incorporeality, and Nonexistant Physiology (Nature type 1, Aspects type 1, 3, 4 and 5 (Laws, time, emotions, life); Is made entirely out of the Antithesis to Energy, Energy being the building block and Information for all of existance, including things like soul, mind, laws, time, emotions, life, etc)
You, of course, should expand on this with more verse knowledge than I'm aware of. Also, anything that is said to be made out of Energy would also count towards their aspects. Like, for example, if there is ever some kind of talk of concepts being made of Energy, they would gain aspect 2 aswell. Also also, you should look if there's any type of Acausality they qualify for; this character sounds like they could get something.