On the planet Felina, the vital milk wells had ceased to flow, inciting a furious rage in their tyrannical ruler, Overcat. He and his armed forces descended upon Earth, seizing every cow they could find. Unfamiliar with the process of milki…

Polly recounted the story of Underdog to Overcat, but he remained unconcerned; instead, he seized her and set about milking the cows. Polly cried out for Underdog’s assistance. Upon arriving at Overcat's planet, he found himself ensnared wi…

Polly administered the energy pill to Underdog, who then swiftly defeated Overcat’s forces. Afterward, Underdog returned Polly and the cows safely to Earth. Overcat issued a challenge, demanding a duel with Underdog for possession of the co…

It initially appeared that Overcat would be victorious. Yet, despite possessing strength equal to Underdog’s, he lacked swiftness. Underdog employed his speed to overcome Overcat. Following their expulsion from Felina, Underdog gifted the c…

With unsettling ingenuity, Sinister and Cad devised another malevolent creation, which they christened the Big Dipper – a machine capable of draining the Earth’s precious water. Its initial tests proved largely ineffective, managing only to…

Simon and Cad had devised a machine capable of drawing away the planet’s waters. They journeyed across the globe, systematically pilfering every available drop. During their theft of the Atlantic, Simon inadvertently left Underdog mired in …

Simon and Cad had emptied the Atlantic and vanquished Underdog, returning to the United States where a clamor arose for the restoration of their waters. “Unless you comply with my demands,” Simon declared, “you will receive no water.” Polly…

At long last, Simon had compelled both the city’s inhabitants and the wider world to grant him absolute authority. Meanwhile, Underdog remained mired in the toxic sludge that now covered what was once the Atlantic Ocean. He ingested a poten…

The warden’s principal deputy approached him with troubling news: Riff Raff was gathering recruits and formulating an escape plan. They felt it necessary to alert Underdog and dispatched for Sweet Polly to summon him. When Polly arrived, th…

As prison guards gave chase to Riff Raff and his newly assembled crew, Shoeshine Boy at last transformed into Underdog and soared toward the prison walls. At the river’s edge, Riff revealed to his gang that he possessed all the necessary pi…

Riff and his crew resolved to plunder one last ship before attempting their prize – the Queen May. Polly, meanwhile, had secreted herself aboard as a diversion, intending to summon Underdog once she was on the Ghost Ship. As the gang emptie…

Polly watched in dismay as Underdog succumbed to the witch doctor’s dark voodoo spell. Fortunately, a passing seagull snatched up the Underdog doll and carried it away to a distant island. There, a monkey spirited the doll to the volcano's …

A peculiar object plummeted to Earth. A team of scientists investigated the anomaly, concluding it was a benign, lifeless comet. They departed, satisfied with their assessment, oblivious to the fact that a hidden aperture had silently opene…

Once the reporters and news crew had departed, leaving the site of the peculiar object deserted, two stone-faced beings from the planet Granite—Gravel and Crusher—emerged from the craft, carrying their Granite Gun. Their purpose was to gath…

Just as they were preparing to depart, leading their captives—slaves seized by the Granite Gun—Crusher and Gravel found themselves facing an army. Employing the Granite Gun, the stoneheads swiftly vanquished the soldiers and set course for …

In the final scene, Shoeshine requested a drink of water once he was secured in his cell. Upon receiving it from the guard, he flung its contents into the man’s eyes. While the guard struggled to recover his sight, the prisoners made their …

Driven by a peculiar scheme, Simon devised the Valentine Vault, a contraption capable of transforming individuals into delicate paper valentines. With chilling precision, he instructed Cad and his two brutish companions to abduct Sweet Poll…

The shoeshine boy witnessed Cad and his men abducting Polly. To safeguard his hidden identity, he had to endure their beating. Afterward, he stood patiently in line for the telephone booth, listening as Polly was informed about the machine …

At last, Shoeshine Boy became Underdog. He rescued Polly, but she collapsed before she could warn him about Valentine’s elaborate machine. Underdog surged forward, only to be flattened and transformed into a delicate paper valentine. Then S…

Polly removed the handcuffs from the pole and wept for her fallen champion. Then she heard his familiar refrain: "The secret compartment of my ring I fill with an Underdog energy vitamin pill." She saw him lying flat, yet seemingly unharmed…

Sweet Polly announced a launch into space, but the capsule veered off course, drawn toward an unknown world. There, the malevolent Zorb had employed a magnet to redirect the vessel to his planet. He explained to his assistant, Cron, that he…

Having recently returned from an unfamiliar world and still adorned with a charm gifted to him by an alien he’d brought back to Earth, Underdog was being questioned by Sweet Polly regarding the rescue and recovery of that very alien. Yet, u…

As Underdog began an interview following his return from a distant world, a sudden dizziness overcame him, and he was swiftly taken to the hospital where doctors worked to determine the cause. Simultaneously, the alien under observation swe…

In the final episode, the giant concluded his game with Underdog, sending him crashing back towards the hospital. With Underdog incapacitated, the Army, Navy, and Air Force were mobilized against the colossal threat. Yet, the giant swiftly …

Following a brutal thunderstorm that had lashed through the city, people assembled before one of the towering steel buildings. There, revealed by the storm's fury, was an inscription etched into its side: "To Underdog, A Rhyme in Time Saves…

Flim and Polly concurred that young Shoeshine, with his gentle nature, would surely understand the riddle: “A Rhyme in Time Saves Nine.” Shoeshine immediately recognized that "rhyme" must refer to Underdog, given his habit of speaking in ve…

The Electric Eel had ensnared Underdog within his electrified cage. As the bars tightened around him, a surge of thousands of volts coursed through Underdog’s body. In his final moments, he pleaded with his adversaries not to cast him into …

The Electric Eel and his gang were bound for Washington, D.C., intent on seizing control of the nation. Fortunately, Underdog was recovering; the lake’s waters seemed to drain the power from the Eel's elaborate trap. He made his way to Poll…

A disturbing sequence of offenses has erupted across the nation. One man attempts to unravel the mystery, yet discovers no trace of those responsible for this sudden surge in criminal activity. But who is the shadowy figure orchestrating th…

Batty Man, a sinister parody of Bela Lugosi’s Count Dracula, is a malevolent vampire. Together with his loyal henchman Georgie and an army of enormous bats, he is responsible for a series of crimes sweeping across the nation. Polly and Unde…

Batty Man had seized both Polly and Underdog. The villains then raided Fort Knox, returning to Batty Man’s castle laden with stolen gold. They proceeded to compress the gold into the shape of bowling balls. Soon, every gold brick was molded…

Polly and our hero found themselves upon the conveyor belt of Batty Man’s bowling ball presser. The steam rising from the machinery loosened Polly's chains, allowing her to slip Underdog his vital energy pill. With renewed strength surging …

While Underdog raced to rescue passengers from a foundering vessel, Simon Bar Sinister deployed a remarkable invention: a vacuum gun. With it, he swiftly captured Riff Raff, Electric Eel, Batty Man, and their entire contingent of henchmen, …

Simon seized Sweet Polly, and she cried out for Underdog. But his strength had been spent rescuing the vessel, and together they were drawn into the vacuum gun’s maw. Then, Simon began filling the device with water.

Underdog’s ring slipped from his finger, and without hesitation, Polly plunged into the water, searching for it below the surface. Simultaneously, Simon and his forces were employing their specialized vacuum weaponry to systematically pilfe…

Polly discovered Underdog’s ring, and with its aid, he quickly regained his strength by taking an energy pill. He then confronted and overcame Electric Eel, Riff Raff, and Batty Man. Simon attempted to use his vacuum gun, but Underdog's res…

Cad, Simon Bar Sinister’s loyal assistant, had systematically replaced every public phone booth with his own ingenious creations – Phoney Booths. Returning to the laboratory to report his progress, he inquired of his employer about their fu…

More and more people find themselves ensnared by Simon’s Phoney Booths. A banker enters one and is instructed to bring all the bank's funds. An engineer steps inside and receives orders to deliver his train to Simon’s laboratory. A colonel,…

Simon amused himself by manipulating Underdog, now within his grasp after unwittingly entering one of Simon’s Phoney Booths. He commanded the hero to dance, then to summon the First National Bank, and finally to retrieve the Empire State Bu…

Simon commanded the entranced Underdog to eliminate Polly. As he neared the trapped reporter, his mind struggled against Simon’s control, finally shattering the mental hold with a burst that broke the bulb above his head. Polly then reveale…