Blue suit with yellow and black stripy tie and glasses
Does the art of Kung Moggy
Pillar box in Mayfair, London
Arthur Wigglesworth Penfold (father), Bronwen Merionedd Ysptty Ystswyth Penfold (mother), Bambi Penfold (younger sister)
Danger Mouse, Colonel K, Agent 57, Professor Heinrich Von Squawkencluck, Professor Squawkencluck, Jeopardy Mouse, Sweetie Pie
Baron Silas Greenback, Nero, Stiletto Mafiosa, Leatherhead, Count Duckula, Dr. Augustus P. Crumhorn III, Dawn Crumhorn, Pandaminion, Sinister Mouse, Baron Silas Von Penfold
Hot cups of tea, his teddy bear, playing video games, jam sandwiches, Giraffe Warriors
Being kidnapped, missions, the lift, the dark, talking toilets, monsters
Powers and abilities
"Oh crumbs!", "Oh crikey! Is there a plan B?", "Cor!" "Coming, Chief"
Ernest Penfold is DM's hamster assistant/best friend. Often mistaken for a mole (presumably on account of his spectacles), Penfold is actually a hamster. He is codenamed the Jigsaw because, at the first sign of danger, he falls to pieces.
Brian Cosgrove has confirmed this on at least one ocassion. Penfold describes himself as a hamster in  Danger at C Level, the second episode of the rebooted series.