I choose Conan because I have no idea who the others are & Red Sonja was a chick & chicks can't be barbarians. It's in the Barbarian Rulebook vol 3
Asterix was cool, but it was pretty damn dodgy. They used to go to this guy everyday to get this magic stuff. The guy's name was Getafix - or something. LOLOLOLOLOLOLOL. That's even more suggestive than Rainbow or Gummi Bears was.