That's Marvin the Martian you're speaking of, keb. His outfit is supposed to evoke a Roman legionary's armour and helmet, Mars being a Roman god, y'see.

Getting back to the original question, about "naff" and "twee", did any of the commentators up-thread discuss the class-related nuances of those words? (Too long, didn't read.)

To my Brit-oriented Canadian ear, "naff" has a distinctly proletarian ring, and it suggests something that pretends to be worth your money but just isn't, like "gold-tone" jewellery or a polyester suit. "Twee", on the other hand, is a bourgeois word, originally popular with the university set, denoting the kind of sticky sentimentality a certain kind of adult thinks suitable for children because they think it has been successfully emptied of sex and horror. Disney's "Peter Pan" is twee, for example, but not as twee as J.M. Barrie's original novel or the West End play derived from it ("Clap if you believe in fairies!").