One of the Daedra allied with Molag Bal? Seems right for many reasons, but I wasn't certain.

I think you're talking about the Frost Giant.

Frost Giants? That hideous, ogre looking thing. Looked NOTHING like the normal giants from original Skyrim. Much more like ogres in the face. So No Ogrim in Dawngaurd? That is dissapointing, what with the game having too few Daedric types, and Dawnguard's vampires owing clear allegiance to at least Molag Bal (Clavicus Vile as well, or no?), and Ogrim being. . . wait, scratch that. . . they are Malacath's Daedra. Nevermind. More Daedroth then!

Was about to say correct you.

Either way, yes yes yes yes yes! More Daedra! More Ogrim, more Daedroth, more Winged Twilights, more Clannfear more everything!

Never played Bloodmoon?

I like ogrims because they look stupid.

They look a lot like Karstaag from Bloodmoon, just taller and thinner, Frost Giants might not be related to giants, given how different in appearance they are.