Rafa has the best natural stats for a treasure hunter; the lower the Brave, the better the chance a character has of finding a rare item by Move-Find. She makes a killer Chemist/Mediator.

I still have yet to find a use for Malak though. I find both Truth and Untruth too random to be useful.

I keep them both just out of a desire for completion.

Stealing Balk's gun is possible and recommended if you have the patience.