I don't remember the game that they came from -- the game involved strange dice that had eyes and were odd shapes (like monsters, statues, etc.)
I see these two as two competing mega-bosses in some fiendish campaign.
Should have put a regular sized mini in the pic for scale. Suffice to say he's giant sized. He reminds me of a cross between a storm giant and an ogre mage.
Oh, and he has a removable weapon!!!
This one is like a cross between a beholder and Tiamat! Excellent!