*taps mic* I want to yap about Erik, specifically my own thoughts/headcanons on him.
So what we know about Erik is pretty straightforward–his parents (and pressumedly most if not all of his neighbours) were killed by Istvan and his men during a raid on Erik's village in Moravia. In KCD1 he is very chill about this fact (something they retconned in KCD2 why Warhorse I'm gonna ignore that). We know this was "when he was a boy" but we don't know his exact age (personally I put it at 13-15 years old, this gives him enough time to have known his parents and to grow bitter towards them and the people around him. For reference I see him as being about 26 or by the events of KCD)
To me, Erik was the "weird quiet kid" of the village, neglected by his otherwise well meaning but "weak" parents, avoided by his neighbours, and under the rule of a lord who was far worse that Radzig ever was (and without the benefits of being a bastard). A blank slate. I know some folks headcanon him as having "serial killer traits" as a child/teen like killing animals but I personally don't. Instead, I see him having an ever-growing bitterness and nihilistic view of the world. And much like Henry, a desire to be more beyond the walls of his village.
But unlike Henry, when everything goes down in flames, he realises he doesn't care that his parents are dead. In fact, he's relieved. And when the man who did it offers him a way out, he takes it. Because while Henry has people who still care for him after the fact, Erik does not.
And with him, he has a purpose, a meaning.