You're not the only one, Dearie. In order to keep myself from calling him a Loki poseur, I got to the root of the problem. Pitch reminds me so much of Loki, as does Jack Frost, that I think they're related somehow, if only through nature, powers, and mythos.
I was going with the original mythology Loki, but the Marvel version works to a certain effect too. And if we're going physically, using Tom Hiddleston as reference, Kozmotis has his father's hair and long, lean, and regal bearing, but Jack Frost has his eyes.