characters, codgers, crackbrains, crackpots, cracks, cranks, flakes, fruitcakes, head cases, kooks, nutcases, nuts, nutters(British slang), oddballs, oddities, originals, quizzes, screwballs, weirdos, zanies
bohemians, mavericks, nonconformists, quixotescoots, geezerscurios, raritiesfreaksfantasticoes, fantasts
odd ducks, pieces of work