On this dragon thing, it did just occur to me about the story of Bel & the dragon from the Book of Daniel. However that story (although about idol worship & crafty priests engaging in chicanery) has never been applied to Yahweh so far as I know. That part of the Book of Daniel is accepted by Catholics & various Eastern Orthodoxy but rejected by Hebrews & Protestants.

My other dragon lore is sketchy.