Is/Was Loki a figure in catholic dogma? While poking around the internets for this question in SciFi&amp;Fantasy, I was reminded of one of my curiosities that had come about from watching the same film.  After watching Kevin Smith's Dogma, my cousin mentioned something along the lines of Loki being actual Catholic dogma according to a friend of his.

I can't find any sources on the internet to confirm this.  In fact CATHOLIC ENCYCLOPEDIA lists him in a paragraph describing the beliefs of 'Teutons and Celts' confusing me more, since I'm quite sure Celts had nothing to do with Loki.  Wikipedia describes the blending of Christian and Norse belief systems in a short paragraph without giving any easy references to go off of.

I find it difficult to drop the idea because I find it a lovely example of Christian syncretism.  I ask in the hopes that some of you may have had interesting discussions in catechism that would have covered this, or perhaps you know where to look better than I do, and can confirm or reject this.

Was the Norse mythological being Loki incorporated into the Catholic belief system, and if so, in what way?
The article you linked to is about magic and the occult, and speaks of magical concepts from many cultures, including Norse mythology. It mentions Loki only once, at the end of that section.  In the very next paragraph, it says that "magic as a practice finds no place in Christianity."

From this, it seems pretty clear that Loki (and all the rest of the mythological figures mentioned in the article) are being used here as illustrative examples only, and don't hold any doctrinal significance in Catholicism.