Dennis & Gnasher Unleashed!

Griller Thriller! (1x6)

Air date: Nov 13, 2017

Dennis' ultimate hero, Grizzly Griller, plans on trekking to the source of the River Beano, broadcasting the treacherous path on live TV. Dennis introduces him to his pet hamster, Galahad - only to discover they are his biggest fear! Grizzly is so afraid that Dennis must disguise himself as his hero and go in his place!