Red Dwarf Preferences and One Shots.

Nicknames.

Lister-

What you call him; Darling.

What he calls you; Dork.

Rimmer-

What you call him; You usually call him 'Rimmer' unless he's sad. Then you call him Ace.

What he calls you; Princess.

Cat-

What you call him; Acushla. (Meaning heartbeat.)

What he calls you; Frisco. (Meaning quick dancer.)

Kryten-

What you call him; Krytes.

What he calls you; He doesn't get the whole nicknames things. So he just calls you by your name.