Rent Son of the Mask (2005)

A decade after wreaking havoc in Edge City, the legendary Mask of Loki finds its way into the hands of cartoonist Tim Avery (Jamie Kennedy), whose new son is born with the Mask's spectacular powers. The newborn boy and the family's jealous dog engage in a boy versus bowser battle royale for control of the Mask that turns the household upside down. But the really Big trouble begins when Loki himself (Alan Cumming), the god of mischief, comes looking for his Mask and he's willing to do whatever it takes to get it back.