Quote Originally Posted by JoeJ View Post
The main thing that bothers me about fomorians is their name. Like titans, the fomorians of myth are the elder gods that were overthrown by the current gods. The weakest of them should be CR 30+, if it's even possible for non-divine beings to fight them at all. The "fomorians" in the MM are great as evil fey giants, but they should have been called something else.
I have to disagree with you there. Only Balor (the Celtic Balor, not the off-brand Balrog) is really titan material; his followers have a much less clear power level.

Not to mention titans are CR 23 in this edition.