One of the reasons I like Dragon Prince is I’ve got no idea what’s going to happen. Viren is a giant prick (not only because he’s scheming and ruthless, but also because he’s foolish, sulky and poorly understands his own motives) but he’s not entirely unsympathetic, I could see him finding redemption if he’s made to understand that his actions are harmful. And his kids are sweethearts (especially Claudia) but the apple doesn’t fall too far from the tree, they have a sense of stubborn righteousness that could easy make them proper antagonists with the right motivations.
Even scary deep voiced mirror guy hasn’t done anything straight out evil yet, or given us any insight into his motivations.