The real names of the Marx Brothers:
Zeppo Marx - Herbert
Harpo Marx - Adolph (changed to Arthur)
Chico Marx - Leonard
Groucho Marx - Julius
Gummo Marx - Milton

And what their names should have been had they starred in...
a spaghetti western: Taco Marx / Poncho Marx / Bronco Marx / Gaucho Marx / Amigo Marx
a horror flick: Pyro Marx / Torso Marx / Romero Marx / Psycho Marx / Cujo Marx
a Warhol film: Nico Marx / Slo-mo Marx / Dallesandro Marx / Gonzo Marx / Narco Marx
a romance: Calico Marx / Tango Marx / Stiletto Marx / Vino Marx / Romeo Marx
a martial arts movie: Judo Marx / Kendo Marx / Dojo Marx / Sumo Marx / Budo Marx
a sci-fi film: Pluto Marx / Robo Marx / Chrono Marx / Draco Marx / Apollo Marx /
a re-make of Trainspotting: Jambo Marx / Wide-o Marx / Portobello Marx / Giro Marx / Square-go Marx
an adult movie: Porno Marx / Fellatio Marx / Gigolo Marx / Vibro Marx / Nympho Marx
a remake of Crocodile Dundee: Dingo Marx / Troppo Marx / Aggro Marx / Drongo Marx / Seppo Marx