It was rumoured that they are the same person, but this has never been proven, and it has been said that the pair are simply brothers who use the same PC. At first Captain Kong existed as a troll account, until a mod called him and Drifter out for being on the same IP address, then they suddenly were brothers. Made a few threads insulting various members, then got banned.
Drifter responded to the accusations though by posting lots of spam. Was suspended on 21/02/2011 and will return on the 27/02/2011, much to the dismay of pretty much everyone besides ONMsMasterTroll, the two are now allies.
As he announced on the PokéForum, he quite enjoys going for a poo poo in the loo.