British funnyman Ricky Gervais has launched a scathing attack on comedy stars who exploit their success by producing spin-off novelty products, branding it "a con".

While The Office creator sees the humour in caricaturing characters in novelty dolls, but Gervais would hate to make a profit from "a piece of tat you don't need".

He says, "We're resisting putting out loads of rubbish. There was a dancing toy. It might be funny to have a tacky Brent doll and it'll probably sell well. But it's a con - a piece of tat you don't need."