tricksterson

noun

Plural: trickstersons

A mischievous or cheeky person using trickery to amuse or deceive others (can be used in negative and positive / affectionate way); rascal; trickster; prankster.

Examples:

But today some tricksterson turned the shining savinger on. (Context: Grandma Estela caught Bruno when he activated the light-saving system in an ancient elevator. Source: J∙ Okram - The Mystery of the Rammed Key.)