He’s the type that knows the handbook back and forth, and is a stickler for the rules that are part of being a Men In Black operative.
But as it turns out, he’s not some evil presence trying to stick it to Agent H and Agent M for the hell of it, he’s doing it because he believes in those rules.
Set up as a red herring for the potential mole of Men In Black International, Rafe Spall’s Agent C seems like a regulatory nightmare when it comes to the actions of our heroes throughout the film.
And Agent O, despite being wise and seeing everything going on in MIB London, is still okay with Agent H getting the top slot.