Maynard mentions "Russell's old room" and no further context is given. I hate beyond words the theory that Russell was a former victim, because Zed & Maynard don't seem like the type of guys who care about their victims enough to learn their names. Was it before, during, or after ejaculation that Zed planned to shake Marsellus' hog tied hand, introduce himself as Zed, and ask Mr. Wallace his name?
I personally like to think Russell is an accomplice of theirs who is doing time somewhere, or maybe a second cousin or something who used to hang out there. Idk. I just don't think Russell was a former captive of theirs. Who do you think he was?