Ernest Penfold , more commonly known as just Penfold, is the nervous hamster deuteragonist in the 1981-1992 TV series Danger Mouse and it's 2015 revival. He is voiced by Terry Scott in the original series and Kevin Eldon in the 2015 revival series.


Penfold is Danger Mouse's trusty assistant. He is called "The Jigsaw" because every time he is faced with a problem he goes to pieces.

He is an anthromorphic hamster who always wears a blue suit complete with a yellow tie with black stripes.

Penfold lives with Danger Mouse (who he calls "Chief") at their headquarters in London in a red Royal Mail Post box and goes on missions with him under the orders of Colonel K. He dislikes going on missions with DM and always makes excuses not to get involved. He especially hates going down the secret lift that goes down to the garage where their car (The Mark III) is kept.

He is sometimes used as a pawn for DM's enemies' schemes such as Baron Silas Greenback using his photographs to brainwash Penfold into an assassin and Dr Crumhorn who kidnapped him and put a lethal robot replica in his place.

His only relative mentioned in the series is his auntie who is always telling him off and refuses to believe that Danger Mouse is a secret agent.


Penfold is quite cowardly. He never likes going on missions with DM because it often results in him being kidnapped. He often also misinterprets instructions, says the complete opposite of what DM says or talks just plain nonsense which ends up with Danger Mouse saying "Penfold, Shush."

Whenever he's in a dangerous situation he panics and says the following words "Oh Crumbs", "Oh Eck", "Oh Carrots", "Oh Crikey" and "Oh Lumme".

Even though Penfold is selfish and cowardly, he occasionally saves the day and always sticks by DM, whatever the situation.



  • In the 2015 revival series, Penfold is shown to be a fan of a video game called Giraffe Warriors and has a onesie based on the game.
  • His favourite food is jam sandwiches.
  • Penfold has a higher voice in the 2015 revival series.
  • Penfold is often mistaken for a mole (presumably on account of his spectacles).
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