Persey and Andy ( short for Perseus and Andromeda ), Frick and Frack, Beavis and Butthead, Dexter and Sinister (Sinisister?), Tony and Cleo
(short for Marc Antony and Cleopatra ), Bonnie and Clyde, Bill and Hillary, Fred and Ginger ( Astaire and Rogers ), Spencer and Katherine ( Tracy
and Hepburn ), Peas and Carrots, etc., etc. - there's a lot more but are any of these workable?