Willie the Weasel has created a formula that turns him into Mr. Hyde. While Blue Falcon and Dynomutt are on the trail of the mysterious Mr. Hyde, they encounter the Mystery Inc. gang and Scooby-Doo (who are unaware that Mr. Hyde is a supervillain and not one of their typical "spooks"). In The New Scooby-Doo Movies-fashion, they team-up with Blue Falcon and Dynomutt (who happens to be Scooby's hero) to stop Mr. Hyde, who has threatened to turn the population of the entire city into "Mr. Hydes" unless he is proclaimed mayor. Fred and the others find a clue (which turns out to be Willie the Weasel's glove), and Blue Falcon deduces that Willie is Mr. Hyde. Blue Falcon and Dynomutt have Mr. Hyde proclaimed mayor and pretend to turn themselves in so Mr. Hyde will lead them to his secret lair and trick him into showing them the antidote to the Hyde formula. Willie the Weasel and his canine partner-in-crime "Snitch" manage to escape. Blue Falcon and Dynomutt head to the Mayor's Mansion to stop Hyde from retrieving his stolen loot. The Mystery Inc. gang set up one of their infamous "Scooby Traps" while Blue Falcon and Dynomutt confront Mr. Hyde and Snitch. Dynomutt captures Snitch while Blue Falcon and the Mystery Inc. crew capture Willie the Weasel/Mr. Hyde. NOTE: This episode is a crossover between Dynomutt, Dog Wonder and Scooby-Doo.
A caveman-like criminal named Lowbrow wants to become the King of Crime and steals some books that will help him in his quest. Blue Falcon and Dynomutt end up assisted by Mystery Inc. into stopping Lowbrow. NOTE: This episode is another crossover between Dynomutt, Dog Wonder and Scooby-Doo.
The Gimmick is a criminal mastermind who uses his prowess of gadgets to create havoc in the city and dares the police to stop him from stealing a train car with a prince inside. NOTE: Mumbly makes a cameo at the end of the episode.
A talking worm called Worm and his henchman Grub use a digging machine to spring Bugsy Busby and Roto Chopper from prison in a plot to steal a super-computer.
An ocean-themed villain named Fishface plans to steal Big City's oil and hold it for ransom.
Manyfaces uses his talent for disguises to trick Dynomutt into arresting Blue Falcon, Mayor Gaunt, and the Chief of Police.
Superthug and his henchman Zorkon have created a super-dynamic steel skeleton and plans to use it to steal the city's steel supply to mass-produce an army of steel skeletons.
Blue Falcon loses his Falcon Communicator while he and Dynomutt are fighting Mr. Cool. Mr. Cool then makes Blue Falcon think that he is F.O.C.U.S. One claiming that Dynomutt needs to recalled to where he was made. With Dynomutt under his control, Mr. Cool has Dynomutt dispose of Blue Falcon while he initiates a plot to freeze Big City.
Blue Falcon and Dynomutt attempt to get evidence that will put Queen Hornet in prison.
Swamp Rat and his henchman Mudmouth plan to flood Big City by using stolen pumps to send half the water in Bogmyer Swamp into Big City to start a crime spree. Blue Falcon and Dynomutt, team-up once again with Scooby-Doo and Mystery Inc. to stop the villains before Big City becomes Bog City. NOTE: This episode is another crossover between Dynomutt, Dog Wonder and Scooby-Doo.
A hack movie director named Eric von Flick plans to make a movie called "The Total Destruction of Big City" starring his robotic creation Tin Kong.
A mysterious criminal named Ironface seeks revenge on Big City by capturing the District Attorney, the Warden of Rockatraz, Detective Malloy, Mayor Gaunt, Judge Grater, Chief of Police Grisby, and the Chief Prosecutor as well as Blue Falcon and Dynomutt. Now Blue Falcon and Dynomutt must defeat Ironface and find out Ironface's true identity.
The Red Vulture steals 2 of the world's most powerful super-jet engines, with plans to use them for his nefarious Vulturejet and in turn dominate the airways.
Fishface, Gimmick, Lowbrow, Queen Hornet, Superthug, and Worm have escaped from Big City Prison and had formed the Injustice League of America. They plan to commit a major crime spree and dispose of Blue Falcon and Dynomutt.
An evil genius of the airways named Blimp is stealing Big City's supply of helium.
The Prophet sets up his own disasters which he can predict for Mayor Gaunt and charge him $500,000 for every prediction he wants to know.
The evil Beastwoman uses her multifrequency Beastwhistle to call all the animals in the Big city Zoo to break out of their cages and drive the people out. Dog Wonder finds Beastwoman in a dog parlor where he gets a poodle chip. D.W. succumbs to the Beastwhistle and, following Beastwoman's commands, captures The Blue Falcon and puts him in a maneating plant. Beastwoman orders her subjects to spread her fast growing seeds across Big City, which she plans to convert into a giant jungle!
B.F. manages to release himself and reprogram Dog Wonder so he won't obey Beastwoman's Beastwhistle. B.W., meanwhile, employs some bird to seed the clouds and have them rain on the seeded Big City, turning it into a jungle. The Daring Duo learn she plans to do this to the rest of the U.S.A. via rocket power, so Blue Falcon detains Beastwoman whilst Dynomutt goes up with the rocket which crashes into the lake and D.W. becomes a moss-covered mechanical mutt. Blue Falcon severs Beastwoman's powers by snipping her veins, and Big City is restored to normal. Blue Falcon attempts to shear Dynomutt's veins, but the latter decides to shake them off by dancing the Hula.
Petty thug Norbert Prindle, alias The Glob, eludes Dynomutt and Blue Falcon at The Crowne Art Gallery and makes off with the multimillion dollar Baltese Falcon, a 2"" statue of solid diamonds. The Dyno-Computer Tracker traces The Glob and the heroes almost collide with the thief. The Glob escapes into a manhole where Dynomutt gets the Baltese Falcon back from him and hides it in a curio shop amongst 9 other phoney Baltese Falcons. The Daring Duo corners Norbert Prindle and his mob at their hideout, but Prindle eludes them again, washing the heroes down the channel by a flood of water. They return to the curio shop to retrieve the Baltese Falcon, only to find that it and the other phoney Baltese Falcons have been sold. Thus begins a mad dash between Blue Falcon and Dynomutt and Prindle trying to beat each other to the various buyers, vying for the prize. The Daring Duo are captured at the third buyer's address, The National Science Institute (the very site where Norbert Prindle became a
As Dynomutt escapes, Blue Falcon becomes Blue Blob. Dog Wonder races his blue buddy to The Falcon's Lair, where he sculpts him back to normal and spritzes him with The Falcon Instant Hardening Spray, and corner The Glob and his minions just as they nab the true Baltese Falcon. They capture Norbert Prindle in a huge goblet, and turn the crooks in and return the Falcon to the Crowne Art Gallery. Later, in the Falcon's Lair, D.W. tries to sculpt a ""Bluetese Falcon"", using B.F. for a model, but his creation shatters to pieces before he gets to profit big from it.
The Daring Duo are on the trail of Madame Ape Face who has swiped the face of Sophia Florenzi and plans tosteal all of the beautiful faces of the starlets of Big City. They catch up with The Madame at GaGa Galore's costume party but her face is stolen. Chasing Ape Face , Blue Falcon and Dog Wonder find themselves headed down a conveyor belt into a cold cream machine!
Saved by The Falcon Fan Snapper, The Daring Duo rush to the aid of the most probable victims. When Fifi Foray wins a beauty contest, Dog Wonder disguises himself as Fifi, and an ensuing scuffle with Madame Ape Face results in D.W.'s face stolen. (Dynoape, Ape Wonder?! It'll never be the same!) Using The Dyno-Radar Hand Detector, the heroes find The Madame's lair and Dog Wonder's face is restored. They catch Ape Face in the act of pilfering Sarah Showerfaucet's face at her apartment. Blue Falcon captures The Madame just as she tosses Sarah's face out the window, but Dog Wonder manages to catch it before it shatters on the concrete below.
Lurking in Big City is The Shadowman, who mysteriously knows all of the plans of The Crime Commission. The Daring Duo are called in when the 700-karat Shmope Diamond is swiped. As they respoind, they spot a shadow sneaking off with plates for new $20 bills stolen from an armored car. The Shadowman later manages to kill two birds with one stone by making off with a secret gold shipment and framing Mayor Gaunt (who is captured in The Dyno Bad Guy Box) all in one shot.
Mayor Gaunt swears his innocence so Blue Falcon and Dog Wonder inspect other members of the Crime Commission. At the District Attorney's home, The Shadowman straps The Daring Duo to a giant loaf of bread and sends them down a conveyor belt to their doom in a giant breadcutter. Dynomutt inflates the bread so it is too big to fit in the slicer and they escape to The Falcon's Lair, where Dynomutt restores both him and B.F. with his Dyno Paint Kit. Then they disguise themselves as The Panhandle Brothers unveiling a solid gold oil well used as a lure to trap The Shadowman, which is a success He is revealed by his own insidious Shadow-Box device to be Harold Twitch, the corrupt Crime Consultant himself. The Daring Duo return the stolen valuables, Mayor Gaunt is proven innocent, and Big City is once again safe