Question: what does puck do in a midsummer night's dream?
Answer: Puck is the mischievous, quick-witted sprite who serves Oberon, the fairy king. ... As the night, and the play, progress, Puck attempts to undo his mistake, but he only makes things worse, with both Lysander and Demetrius ending up in love with Helena, who is convinced that they are mocking her in their pursuit.