The series was produced by Collingwood O'Hare Productions and D.C. Thomson & Co. in association with BBC Television, alongside Flextech and PolyGram Video for the first season only.

NOTE: Willie Rushton died 7 months after this episode originally aired on Children's BBC, making this one of his last roles.

For this series, the animation team switched from traditional cel-animation to digital ink-and-paint, making the motions appear much smoother.

[1] Screenshots and an episode can be found at the production company Red Kite Animation's website.

All 26 episodes the complete 2 series was released 22 August 2011 in a DVD boxset titled Dennis & Gnasher: Special Agent Dennis & 25 More Crazy Adventures (8 Discs), it also contains "The Beano Videostars" and "The Beano Allstars" on 22 August 2011 which makes all episodes available on DVD.