So then there was that time that Loki gave birth to an immortal octohorse. I...I don't know if the fine people at Marvel have ever addressed that part of the mythology in their funnybooks.
characters by Stan Lee, Larry Lieber & Jack Kirby, Marvel Comics; also various dead Norsefolk graphite; J. E. Seames, 2011
Ha! Ha! I'd so love to see them address this part of the lore! LOL! They told the story in the tales of Asgard series, but they totally swerved around the mare birthing bit! LOL! XD