Oh ok. I've already gotten to work on his stats along with Cadence and Dorian. It should be obvious but Nikalus is the handicap-paladin unit. Don't write asset/flaws for any CS's you do, and give Nikalus the reclass options Mercenary and Knight. I'll do Cadence, Dorian and Ezeras.
Also I was thinking it would be cool if Martin was a Blade Lord. Like, already promoted advanced lord unit.