trickster

(noun) someone who plays practical jokes on others. Synonyms: prankster, cut-up, tricker, hoaxer, practical joker.

(noun) someone who leads you to believe something that is not true. Synonyms: deceiver, cheat, cheater, beguiler, slicker.

(noun) a mischievous supernatural being found in the folklore of many primitive people; sometimes distinguished by prodigious biological drives and exaggerated bodily parts.