trickster in WordNet English dictionary

1. someone who leads you to believe something that is not true
   deceiver  cheat  cheater  trickster  beguiler  slicker 
   
2. someone who plays practical jokes on others
   prankster  cut-up  trickster  tricker  hoaxer  practical joker 
   
3. a mischievous supernatural being found in the folklore of many primitive people; sometimes distinguished by prodigious biological drives and exaggerated bodily parts
   trickster