They are employed by the absent-minded but slightly firm Colonel K (Stephen Fry) and usually assisted by the inventions of short-tempered genius Professor Squawkencluck (Shauna Macdonald).
When Penfold is accidentally turned huge, trying to stretch his trousers after they got shrunk in the hot wash, DM figures out it could actually be helpful to save the world.
Danger Mouse and Penfold become reluctant surrogate parents to Baron Greenback, who seems to have accidentally erased his own memory when his latest evil scheme goes wrong.
While on a mission in Transylvania, Danger Mouse and Penfold meet a show-obsessed vampire duck named Count Duckula, who is determined to take over the world, one terrible TV show at a time.
Whilst trying to prove that magic doesn't exist, Danger Mouse accidentally unleashes an evil magical queen into the world!Title reference: Queen of Hearts Danger Mouse must battle a criminal organisation called Hydrant after finding out he has lost Agent Of The Month to Jeopardy Mouse.Title reference: Hail Hydra The Princess is back and erases all weekdays so she can play at the weekend forever!
When Danger Mouse is responsible for Professor Squawkencluck losing her job, his clumsy attempts to get her back help the Baron split the Earth in two.
The dynamic duo take on a shoddy army of knock-offs when Quark's latest money-making scheme is to create cheap copies of Danger Mouse and Penfold.
Danger Mouse's confidence takes a hit when the Baron accidentally steals it and invigorates his shy daughter, Delilah von Greenback, to create a criminal mastermind!
The Queen of Weevils returns and convinces DM he's a medieval knight in order to escape from a secure prison - can Penfold break the spell and prevent London becoming a medieval city?Plot reference: Star Wars: Episode IV – A New Hope Danger Mouse faces the prospect of being written out of his own show, after Count Duckula kidnaps the writers and forces them to make him the star.
DM and Penfold go back to school to thwart the plans of an evil food scientist, named Professor Ham Hands and his killer hot dogs.
The 'ping' of a microwave causes Danger Mouse to blast a hole in the wall of Squawkencluck's laboratory and inadvertently discover (and create) Birch Badboy's origins.
Danger Mouse's addiction to challenges threatens the world when Quark tricks him into transporting a ticking timebomb back to Earth!
Derek Mollar a geeky descendant of DM, travels back in time to try to stop Danger Mouse from destroying the world.
Danger Mouse and Squawk discover the Baron's plans to brainwash the world's pets into becoming his personal army of slaves, while Nero ends up in Penfold's care.
He, now, uses a ray that controls people and gets Ivana the Invisible, Megahurtz, Rocket Sloth and Baron von Greenback to help him defeat Crumhorn.
Title reference: You Only Live Twice After she is accidentally regressed to a teen, Danger Mouse must summon Squawk's Twystyverse counterpart to talk some sense into her.
Title reference: Twisted Sister Danger Mouse inherits the ancient but spritely MK3 car after the beloved MK4 gets jammed-up (literally).
Baron Greenback brews a plot to steal every beverage on the planet and mix them all together, turning Earth's drinks into an un-drinkable, disgusting sludge whilst rendering all of DM's allies unable to help him!
Or is this boring new life not what it appears to be?Title reference: Total Recall Guest star: Richard Osman as Professor Strontium Jellyfishowitz Danger Mouse faces the Queen of Weevils in a fearful Halloween Special.Title reference: A Night to Remember Guest star: Miranda Richardson as Queen of Weevils Danger Mouse reluctantly takes a role in Pink Dawn's musical re-enactment of "Melted" for a double-length, all-singing, all-dancing special.
Danger Mouse, Penfold and Squawk go undercover disguised as a family to find out why the world’s villains are heading to one holiday camp, Sydneyland.
When Penfold enters Squawk and DM in a dance competition they discover the prize is the fabled Helmet of Power, an ultimate invention bent on destruction.
When a sudden urge to fly the Mark IV hits, Penfold leads a confused Danger Mouse to a farm, from which he claims to feel an unexplained magnetic pull.
Whilst the bailiffs are in collecting goods from HQ the team decide to hold a telethon, asking people to phone in and donate to order their favourite clips to be played.
When the Danger Agency’s public approval ratings plummet, Colonel K brings in a truly out-of-this-world PR guru to help put things right.
DM is soon won over after seeing Quark demonstrate his Exaggerator Device: an invention that spins even the most mundane event into an outrageously overblown display of awesomeness.
Stuff is going missing all over the world, but the team are distracted, fascinated by Squawk’s new Futuroid camera, which incredibly spits out snaps of future events.