The Drifter is a character who appears in the episode "No Weenies Allowed." He drifts along towns, finding tough clubs, based by his name. He somehow knows that the Salty Spitoon's patrons are pretty tough.
The Drifter looks exactly like SpongeBob, only he has thick, glossy, black hair. Another similarity to SpongeBob is that he is also voiced by Tom Kenny. He claims to be tough, though Reg never tells him to prove it before letting him enter the Salty Spitoon. He pulls his hair, but it didn't hurt the Drifter, implying that he is quite tough.
Role in episode
When the Drifter asks to enter the Salty Spitoon, Reg thinks he is SpongeBob wearing a wig and tries to pull the Drifter's hair off, but when the real SpongeBob appears wearing a rainbow wig, Reg apologetically fixes the Drifter's hair and lets him in.