1. prankster, cut-up, trickster, tricker, hoaxer, practical joker, troublemaker, trouble maker, troubler, mischief-maker, bad hat

usage: someone who plays practical jokes on others

2. deceiver, cheat, cheater, trickster, beguiler, slicker, wrongdoer, offender

usage: someone who leads you to believe something that is not true

3. trickster, spiritual being, supernatural being

usage: a mischievous supernatural being found in the folklore of many primitive people; sometimes distinguished by prodigious biological drives and exaggerated bodily parts

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See also: trickster (Dictionary)