JJ's so keen to get Dennis the new bike she thinks he's desperate to have, that she agrees to make a deal with Walter, and without realising it, passes on information that could lead to a jelly-blasting rampage.
Series 1: 38. Bertie's Backbone
Dennis and the gang train Bertie in the art of standing up to people so he can rebel against Walter's bossiness - but they train him too well and he becomes a dangerous reb ...
Series 1: 37. Grizzly's Great Outdoors
A snake bite causes Grizzly Griller to forget all his survival know-how, so it's down to his greatest fan Dennis to help him re-learn his survival skills and help them all ...