Synonyms for Trickster (same or very similar meaning)
WordNet sense 1 (someone who plays practical jokes on others):
hoaxer, prankster, cut-up, tricker, practical jokerWordNet sense 2 (someone who leads you to believe something that is not true):
beguiler, cheat, cheater, deceiver, slickerFrom the ODE community, based on WordNetadd/edit