Umm... That was all really. He was looking for his family, any descendants from Atlantis. I know he was either Immortal, or he could remember his past-life, because he was thousands of years old but looked like a 20 year old.
Ah, he's a static character. A personality that's obviously akin to greed but is kind and lenient without being a pushover. He keeps himself out of most affairs so he doesn't have to deal with the 'annoying' emotional parts of it when that tends to happen, which does happen.