I think he qualifies. Even though Romeo was a lot more powerful than Hadrian and did a lot more damage, he ultimately redeemed himself, while Hadrian is completely irredeemable. Besides, doesn't TV Tropes have zero influence here on the Villains Wikia?
The Pure Evil category is the same as the Complete Monster trope, just with another name. Obviously, if TV Tropes does an idiotic decision such as Brainiac from Smallville counting as a CM despite obvious moral agency issues, we won't add Pure Evil to his article.