No, no, Rune, in your case, it'd be perhaps better if I stayed just with the first formulation "served the Enemy, consciously or indirectly"
Neither Húrin nor Túrin served the Enemy at any point. And I wouldn't call them "evil" as well. You might use these examples to show you where are the "borders" of the terms I used.
Also, note please, that neither Turambar, nor Thalion, and certainly not Unhappy are surnames. Or, at least not how I meant it. Surname is, well, the family name, the name you have common with your son or father or whatever.
If there are any further questions, please don't be afraid to ask