In Paranoia 2nd edition, player names are structured as
sector. The first name can be anything, the clearance starts out as R for Red, and the sector can be any three capital letters. The rulebook strongly advises that this is used to make some kind of horrible pun, so my PCs dutifully created characters with names like Traito-R-USS, Cho-R-IZO, Roberts-R-DUM and Bash-R-SEE.
Frustratingly, some of these PCs survived their first mission and I suppose that I should probably promote them for this, meaning that they advance to Orange clearance. Unfortunately, Traito-O-USS doesn't work as a pun any more.
Is there an established approach to this? Should I allow my players to rename their characters? Should I encourage them to think harder about puns that work throughout the clearance levels?