trickster

Any of numerous figures featuring in various mythologies and folk traditions, who use guile and secret knowledge to challenge authority and play tricks and pranks on others; any similar figure in literature.

One who plays tricks or pranks on others.

One who performs tricks (parts of a magician' act or entertaining difficult physical actions).

An impish or playful person.

A fraud (person who performs a trick for the purpose of unlawful gain).