Blunder is an ensemble sketch show featuring the best new character comedians in the country. The six strong cast is Rhys Thomas-Fast Show/Star Stories, Tom Meeten-Mighty Boosh, David Mitchell-Peep Show, Nina Conti – Bromwell High, Tony Way-Extras/Saxondale and Simon Farnaby-Spoons, Jam and Jersusalem.

The series features a colourful array of cartoonish characters and oddballs shot live before a studio audience. Regular characters featured on Blunder include: 
The Baron (Tom) – a hyperactive puerile madman who claims to be the most evil man in the world. 
Colonel Rudd (David) – a maverick wannabe vet who ill-advisedly uses his animal practises on humans. 
Malibu Man (Rhys) – he gets randy on malibu and tries it on with a member of the audience. 
Emperor Boswellox (Tony) – He’s conquered moons along with his followers, but his memory isn’t quite so superhuman. 
Trish (Nina) – a woman who can only talk in a ‘comedy’ language. 
Stuart Ogilvy (Simon) – a frustrated middle-aged, middle-class golfer who literally gets steamed up about what’s wrong with society. 
Karate Johnson (Tom) – a marshal arts expert who tells morality tales, while revealing a little more than he should.