So with the novel I'm working on, I've run into something I don't really see as a problem, but would like to get opinions on to be sure. The novel revolves around several 'test subjects' with numerical designations. Almost all of them reject their designations and come up with nickname-like names for each other, which is what the narrator and the others refer to them as most of the time. On occasion though, they refer to them as a shorter 'nickname' (I do this to break up the repetition of repeating a character's name several times over). For example: Character's Designation: #045 Character's 'Real Name': Chameleon Character's 'Nickname': Cammy The designation would only be referred to a few times throughout the book (possibly during the prologue and when the character is first met). As I've said, the 'real name' would be referred to the most, while the 'nickname' would be referred to by certain characters or during particular scenes. My question is is having these 'nicknames for nicknames' too confusing? I should say that I try to write so there's not more than 3 or 4 characters speaking at once, so keeping things straight on who's who isn't much of an issue. I also realize it depends on a writer's style and how they convey the information that would ultimately determine this. I'm just curious if anyone finds this inherently confusing.