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Series 1: 39. Gnash Hit
Gnasher becomes the star of an action movie, playing Grizzly's on-screen sidekick. But filming keeps him and Dennis apart, leaving Dennis feeling lonely. Could Dennis and Gnasher really become Grizzly and Gnasher?
Source: CBBC
Most recent episodes of Dennis & Gnasher Unleashed!
Dennis & Gnasher Unleashed!
Series 2: 20. Grizzly Games
Dennis and the gang can’t wait for their all-day PE training day with Grizzly Griller and are baffled when their idol makes them learn a range of boring non-sports that on ...
28-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 19. Pranks For The Memories
Dennis is on his last warning – one more prank in school and he will be sent to Grim Lane School. While he struggles to sustain a prank-free day, Walter conspires to make ...
27-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 18. Inventor's Block
Dennis doesn’t realise that the pressure he’s putting on Rubi to excel in the school science fair is giving her a severe case of inventor’s block.
26-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 1: 10. Prank Wars
Dennis discovers that Ralf the janitor is the legendary Prankmaster General and is told he could become his successor. Walter won't let this happen and challenges him to a prank ...
25-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 1: 9. The Hamazing Hamsterman
Dennis gets into a fluffy mess when he runs into Von Screwtop's hadron collider with the professor's pet hamster, Galahad. To stop Dennis from completely changing into a hamster ...
24-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 17. President Dennis
Dennis is accidentally elected class president and is eager to shed the burden that comes with the title. However, every daft class policy he declares only makes him more popular.
23-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 16. Thumb Wars
In a somewhat misguided attempt to resolve Dennis and Walter’s spiralling competitiveness, Miss Mistry offers thumb wrestling as a solution - but can Walter play fair, or ...
22-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 15. Boarding Beano
Doctor Pfooflepfeffer’s first act as head of governors is to turn Bash Street School into a boarding school. However, the pupils devise a series of daring attempts to esca ...
21-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 14. Cat V Dog
Walter’s pampered cat Clawdia persuades her way into the gang, and only Gnasher can tell that she has a hidden agenda to oust him from Dennis’s life forever.
20-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 13. The Comedy Crown
The gang enter Pieface into a comedy contest to make him realise how brilliantly funny he is. Determined to win the crown, Walter uses the latest WilburCorp gadget on the unsusp ...
19-01-2026
CBBC
Most popular episodes of Dennis & Gnasher Unleashed!
Dennis & Gnasher Unleashed!
Series 1: 25. Postcards From The Veg
Pieface laments that Paul is looking peaky and needs a holiday. Dennis has a plan! But its only when Walter kidnaps Paul that he realises his chips are down and he needs the gan ...
27-09-2025
CBBC
Dennis & Gnasher Unleashed!
Series 1: 33. Ralf's Last Prank
When Dennis and the gang think they have caused Ralf to lose his job, they're determined to make his last day at Bash Street School totally blam by setting up the greatest prank ...
22-09-2025
CBBC
Dennis & Gnasher Unleashed!
Series 1: 11. Give Peas A Chance
Mayor Wilbur passes a law to increase the healthy eating in Beanotown, replacing all foods with peas...of the mushy variety! The gang must avoid the people of Beanotown who are ...
21-09-2025
CBBC
Dennis & Gnasher Unleashed!
Series 1: 34. Extreme Sports Day
Dennis recruits Grizzly Griller to help make school sports day more extreme, but as he and JJ get competitive against each other, who is sabotaging both their chances of winning?
26-10-2025
CBBC
Dennis & Gnasher Unleashed!
Series 2: 19. Pranks For The Memories
Dennis is on his last warning – one more prank in school and he will be sent to Grim Lane School. While he struggles to sustain a prank-free day, Walter conspires to make ...
27-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 1: 10. Prank Wars
Dennis discovers that Ralf the janitor is the legendary Prankmaster General and is told he could become his successor. Walter won't let this happen and challenges him to a prank ...
25-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 12. The Abominable Showman
Torn between practising Blamjitsu with the yeti and helping the Dinmakers write a new school song, JJ tries to combine the two by bringing the yeti along to band practice disgui ...
16-01-2026
CBBC
Dennis & Gnasher Unleashed!
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 make ...
08-11-2025
CBBC
Dennis & Gnasher Unleashed!
Series 2: 15. Boarding Beano
Doctor Pfooflepfeffer’s first act as head of governors is to turn Bash Street School into a boarding school. However, the pupils devise a series of daring attempts to esca ...
21-01-2026
CBBC
Dennis & Gnasher Unleashed!
Series 2: 20. Grizzly Games
Dennis and the gang can’t wait for their all-day PE training day with Grizzly Griller and are baffled when their idol makes them learn a range of boring non-sports that on ...
28-01-2026
CBBC