Question. Is the guy on the left Valvatorez?
Which picture you are talking about? The first one?
This is Kilia, the new protagonist, and IMO he really looks like Valvatorez indeed.
He is the main char of this game (Disgaea 5).
Check my sig, all protagonists from Disgaea titles are in order, with Valvotorez and Kilia right next to each other.