The moon was later named after the character Puck who appears in Shakespeare 's `` A Midsummer Night 's Dream '' , a little sprite who travels around the globe at night with the fairies . In Celtic mythology and English folklore , a `` Puck '' is a mischievous sprite , imagined as an evil demon by Christians .
In Celtic mythology and English folklore , a `` Puck '' is a mischievous sprite , imagined as an evil demon by Christians ; the moon is named after the Puck who appears in Shakespeare 's `` A Midsummer Night 's Dream '' , in which he travels around the globe at night with the fairies .