Krem, ultimately, when presented with someone who struggles to overcome his or her personal doubts and fears and who you know will absolutely do his or her best to do what is right, I tend to find that compelling.

It's not a question of good or evil. One of my favorite fictional characters is Marc Remillard from Julian May's various novels. He's an evil man, ultimately. He does evil things. But he does so firmly believing in them, absolutely sure he is right to do them, and that they are for the best for everyone. Similarly, I've always enjoyed the re-characterization of Magneto by Chris Claremont since it gives context to what was just a generic bad guy.

Turalyon works for me because he is not just good, but he is fiercely determined to do good. He doesn't kill Doomhammer even though Doomhammer killed Lothar. Even though Turalyon clearly loved Lothar like a father, he does what he believes is right over what he wants to do. He makes a personal sacrifice, giving up the vengeance he would prefer in the name of the ideals he swore to uphold.

That level of his character appeals to me. It's easy to do what you want. It's much harder to do what you believe is right even when it conflicts with what you want.