The Swordsman of Harmonia
Nash's debut came in the form of two Playstation games known as the Suikogaidens. They tell the story of a disinherited scion of a once-powerful Harmonian noble house. The also tell the story of characters we've already seen in Suikoden II, and adds depth and history to a few stars of destiny.
They're also text adventures, not traditional RPGs. And, uh, they were released in Japan only, and never even fan-translated, so they're fairly obscure. But, uh, that scion of the Harmonian nobility I was talking about is none other than Nash, so I've kinda gotta talk about them.