Kaodi
Hero
I'm still trying to figure out how to use this to my advantage. Steal a ton of money and have no one remember who I am? Nope... I'd just get blamed as "that guy who's the real thief's lackey."
Might be low impact, but erhaps you could try trivia and gambling. Bet folks that they cannot quess which member of the team accomplished certain deeds with Dranko did. Since no one remembers who Dranko is, there should be no way for them to guess correctly. You could ever add lie detection magic to the trick to make it look legit. Unless maybe that sort of thing has already been ruled out by Sagiro...
Were Dranko not the monogamous sort of half-orc, he might have been able to one-up Kay's (?) amorous father with this ability to not be remembered. Except... errr... I guess that could get "messy" because none of the children would know who their father was, which would be bad if they ever met...
If Dranko was really good at art, he could do paintings and sculptures and perhaps build up a mystery around the artist who nobody knew about and inflate the price of his works. Which, of course, he could always miraculously "find" more of.
Actually, that might not be a bad line of thought in general: Exploit the allure of an unassailable mystery to your advantage.