[Keldor doesn't quite know what to call the emotion he's feeling, seeing as he feels it rarely, but it's that feeling of elated relief and bonding that could be summed up as "kin spirit". A kind of deep friendship. Like this is someone you could trust with anything.]

Essentially, yes. We are all stained with the blood that Grayskull spilled when he was murdered. Or so they see it.

[The thought makes him want to cry, but Keldor is not a man of tears but of action. Knowing that there are people suffering makes him want to do something about it. Like take back the crown that he feels was stolen from him by Randor after the death of Queen Amelia.