I like eduan. I think his personality change from his data self to his current self is very telling of how he has been affected by his long life and basically accumulated trauma. Traumerei algo went through that but since he was twisted even from his youth in some capacity his overall personality apparently changed less. I mean, Data eduan was chill. He liked partying, he helped bam, he kept his family at least as valuable subordinates... We see more of him at traumerei's wedding and he seemed like just an older version of his data self. Maybe more of a womanizer at that point. And then we get eduan during urek's spinoff and he seems like a derailed nutjob that gets off of fighting. He is more than that of course but the change in his mental state is depicted pretty well.
Family heads seem to have been affected in different ways and varying degrees by their lifespans but eduan makes me curious as to how family heads have evolved. Leerang strikes me as someone who had a relatively normal personality back in the day so I am curious as to how she is now. I kinda picture her as a goddess of beauty that's sort of lost her mind.