system
Given the following post, respond as if you're commenting on Reddit:
human
[DC/Batman] Is there a reason why Batman hasn't had a sidekick codenamed "Batboy"?

There's been a couple of Robins,a Red Robin,Red Hood,Batgirl(s),Orphan,Spoiler,Huntress and a bunch of other names I can't remember...but no Batboy? Why!?
gpt
I believe in one continuity, Robin was called batboy by some goons and very quickly and forcibly corrected them. Robin is typically the first sidekick Batman had in the lore, before keeping up the tradition of having a "Robin" as they age out and become Nightwing, Red hood, etc. 

Iirc, the first Robin wanted to be called that and the name stuck. In Teen Titans, we see that as well, that Robin corrects a villain that he IS Robin, not just a Batman in training. As angsty as the live action "Fuck Batman" Robin is, og animated Teen Titans Robin has a lot of issues with coming out of Batman's shadow and becoming his own hero as well.