Now we know the names of at least 5 of them. I can't recall if we ever learned more.

Bahamut (male)
Tiamat (female)
Nidhogg (male)
Ratatoskr (female)
Hraesvelgr (male)

But are all of these really from Middies First Brood (implying he sired more afterwards)?

Who's the mother?