Description

Dialogue:

• "Who are you, eh? Stop bothering me and just get out of my sight! If you want to take a look, you'll have to pay."
• "This place is quite mysterious. The materials on this door in front of me are, frankly, bizarre. You see, a very surreal item that contains the essence of Ancient Irinid... is the exact opposite of this. It was made very recently..."
• "I've never even heard of this island! There's so much to explore in Erinn."

That's all he says to me, he has no idle chatter. He says nothing about his fellow Aces.

So gauging from this, along with the Dual Gun L-Rod's description, Treasure Hunter's just obsessed with treasure hunting. That's pretty much all we can say about him at the time, I guess.