His friends left him behind to leave him to pick up the pieces, only to find out that they were alive and protecting something that could destroy everything he worked for. I get why he is angry. I don’t want him to kill Agatha, but I get why is feels betrayed.

Honestly? I don’t want to blame him. I mean, he did make his empire, he did do all this terrible things, but alone, broken, trying to survive with him and his son in a lost world that fell apart which they thought had fixed. I get it, and I get why. He may be an antagonist, but he isn’t really a villain.