Do5 Garath. Though Warpath and Pandan have already covered everything there is to say about him.
RtR Ava. Unique jeigan concept, and while she initially sits on the sidelines being all “training training training”, once her backstory comes out she has a much bigger stake in the story than Vance does, and actually becomes a really good unit once she’s forced out of her shell. She deserved to be the main lord for the entire rest of the game after Vance’s absent spell tbh.
VQ Titus. Sadly I can’t really say much about him without spoiling beyond the end of the current demo. Just play VQ when it releases