High Quality Content by WIKIPEDIA articles! Dennis and Gnasher is an animated British TV series based on characters from The Beano comic, which ran from 4 February 1996 until 5 July 1998. The series was produced by Collingwood O`Hare and Beano Productions in association with Flextech, Polygram and BBC Television, distributed by HiT Entertainment worldwide, and was directed and largely written by Tony Collingwood. A new series has been announced by the BBC and was released in 2009.