The BEST episodes of Underdog season 3

Every episode of Underdog season 3, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Underdog season 3!

There's no need to fear! Underdog is here! When criminals in this world appear And break the laws that they should fear And frighten all who see or hear The cry goes up both far and near For Underdog! Underdog! Underdog! Underdog! Speed of lightning, roar of thunder Fighting all who rob or plunder Underdog. Underdog! When in this world the headlines read Of those whose hearts are filled with greed Who rob and steal from those who need To right this wrong with blinding speed Goes Underdog! Underdog! Underdog! Underdog! Speed of lightning, roar of thunder Fighting all who rob or plunder Underdog. Underdog! ** The original airing order of the episodes is not available, but if you uncover it or have some info to add, please submit it. Thanks. **

Last Updated: 4/23/2025Network: NBCStatus: Ended
Batty Man (3)
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#1 - Batty Man (3)

Season 3 - Episode 27 - Aired 1/14/1967

Batty Man has captured Polly and Underdog. The villains raid Fort Knox, returning to Batty Man's castle with the plundered gold. The villains press the gold into a bowling balls. Before long, all the gold bricks are molded and painted black. The villains plan to fence the disguised gold in Europe while posing as bowling ball sales reps. Before they leave for the docks, Batty Man and Georgie place Polly and Underdog onto the conveyor belt that feeds the bowling ball press.

Round and Round (2)
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#2 - Round and Round (2)

Season 3 - Episode 18 - Aired 11/12/1966

After returning from a strange planet and wearing a charm that the alien from the planet he brought back to Earth with him, Underdog is interviewed by Sweet Polly about the rescue and retrieval of the alien. However, once he stands up, he becomes dizzy as things begin to spin around. Back on the strange planet, Zorb explains that as long as Underdog wears the charm around his neck, he will become dizzy. He then checks on Cron, who is being examined by scientists. Cron is caged when he becomes agitated. He then takes a pill Zorb gave him which causes him to grow and break free.

Round and Round (3)
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#3 - Round and Round (3)

Season 3 - Episode 19 - Aired 11/19/1966

When Underdog gets dizzy during an interview after returning from a strange planet, he is rushed to the hospital where the doctors try to find the cause. Meanwhile, the alien grows so big, he breaks out of the lab where he was being examined. Underdog hears the cries for help and leaves the hospital to face the now giant alien. But the charm around his neck causes him to get dizzy, and the giant toys with him.

Round and Round (4)
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#4 - Round and Round (4)

Season 3 - Episode 20 - Aired 11/19/1966

In the final episode, the giant finishes toying with Underdog and bats him back to the hospital. With Underdog out of the picture, the Army, Navy and Air Force is called into action against the giant. The giant conquers all the armed forces. Polly explains to Underdog that they were all defeated. Hearing this, Underdog tries to leave, but Polly grabs him by the charm around his neck. In the tug-of-war the charm breaks and Underdog is no longer dizzy. Underdog faces the giant and then punches him so hard, he lands back to his home planet.

A New Villain (1)
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#5 - A New Villain (1)

Season 3 - Episode 21 - Aired 12/10/1966

After a violent thunderstorm ravages the city, the community gathers in front of one of the steel buildings to see a message revealed inscribed on its side: 'To Underdog, A Rhyme in Time Saves Nine'. Sweet Polly asks Flim Flannigan at the police station what it means. Flim explains it could only be the work of Slippery Eel. A few weeks earlier, Eel, Fish, and their henchmen attempted to rob an armored car. They were caught by Underdog and were sent to the maximum prison with the electric fence. Still determined to get out, Slippery Eel tells his boys that he is going to climb the fence now that the power didn't seem to be on. Midway climbing the fence, the guards see him trying to escape and turn on the electricity. However, instead of electrocuting him, it electrifies him, and he then claims that he is now 'The Electric Eel'. He shoots bursts of electricity at the fence and wall and escapes with Fish and the gang, all the while vowing to get even with Underdog.

A New Villain (2)
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#6 - A New Villain (2)

Season 3 - Episode 22 - Aired 12/10/1966

Flim and Polly agree that humble, loveable Shoeshine boy would be able to make sense of the riddle 'A Rhyme in Time Saves Nine'. Shoeshine deduces that 'rhyme' refers to Underdog, since he always talks in rhyme, 'time' refers to clock, Polly suggests Big Ben, but says that that's in London. Shoeshine deduces, what the biggest 'Ben' is around in the city, to which Polly responds 'Ben's Jewelry Store' (not Big Ben). As for 'Nine' Shoeshine deciphers that there are nine players on a baseball team and baseball is played on a diamond. Polly then sums up the solution of the riddle that if Underdog gets to Ben's Jewelry Store he can save the diamonds. She then tells Shoeshine to hurry and find Underdog. Shoeshine immediately rushes to the nearest phone booth and becomes Underdog (no waiting) Prior to arriving the Electric Eel demonstrates to Ben and the others he is holding up, the trap of an electrical field he has waiting for Underdog. When Underdog arrives, he steps into the trap and can't break free of the electrical field.

A New Villain (3)
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#7 - A New Villain (3)

Season 3 - Episode 23 - Aired 12/17/1966

The Electric Eel traps Underdog in his electric cage. As the cage closes in around him, the cage fills Underdog's body with thousands of volts. Before he dies, Underdog asks the villains not to throw him into the city's lake. Underdog's body is soon limp at the bottom of the electric cage. Sensing victory over his foe, the Electric Eel takes Underdog's body to the city lake and throws it in. Free from Underdog, Electric Eel begins his massive crime wave across the city. Still not satisfied, the Eel decides to commit the ultimate crime.

A New Villain (4)
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#8 - A New Villain (4)

Season 3 - Episode 24 - Aired 12/17/1966

The Electric Eel and his gang head for Washington, D.C. to take over the country. But Underdog is on the mend; the waters of the lake sap the electric charges from the Eel's trap. Underdog heads for Polly's TV station, where he finds out that the crooks are heading for our nation's capitol to force the President to turn over control of the country to them. Quickly, Underdog heads for the Sandwich Glass Blowing Factory. When he gets there, he asks the factory's owners to show him their biggest glass jar. When they can't find a glass jar big enough to hold a man, Underdog learns how to blow his own giant glass jar. Armed with the jar, Underdog flies to Washington, D.C. where he puts the Electric Eel in the giant glass jar. One less Electric Eel on the streets.

Batty Man (1)
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#9 - Batty Man (1)

Season 3 - Episode 25 - Aired 1/7/1967

A series of crimes are being perpetrated all over the country. Underdog tries to solve them, but finds no clues as to who is behind the crime wave. Who is the new super villain behind the crimes that are paralyzing the country?

Batty Man (2)
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#10 - Batty Man (2)

Season 3 - Episode 26 - Aired 1/7/1967

Batty Man, a take-off of Bela Lugosi's Count Dracula is an evil vampire. He, with his hench-bat Georgie and his army of giant vampire bats are committing the crimes all over the country. Polly and Underdog investigate the mysterious goings on at Batty Man's castle. The pair are attacked by Batty Man. Underdog tries to fight off the evil villain's bat army, but the battle is too much for him and the duo are soon chained.

Round and Round (1)
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#11 - Round and Round (1)

Season 3 - Episode 17 - Aired 11/12/1966

Sweet Polly is reporting a launch in space but the capsule is pulled off course to an uncharted planet. On this planet, the evil Zorb used a magnet to pull the capsule to his planet. Zorb explains to his henchman, Cron, his plan to use the capsule as a decoy to lure Underdog. The capsule lands on the planet and gets stuck in the mud. A call is made to Underdog to rescue the planet. After freeing the ship, Cron approaches with a charm and puts it around Underdog as a gift. Underdog, thinking he is a friend suggests to bring Cron back to Earth.

Batty Man (4)
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#12 - Batty Man (4)

Season 3 - Episode 28 - Aired 1/14/1967

Polly and our hero have been placed onto the conveyor belt of Batty Man's bowling ball presser. The steam from the machine loosens Polly's chains, enabling her to give Underdog his super energy pill. His strength renewed, Underdog flies out to capture Batty Man, Georgie and their bat army, recovering the gold. Our hero returns the gold to Fort Knox and then turns the villains over to the authorities.

The Vacuum Gun (1)
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#13 - The Vacuum Gun (1)

Season 3 - Episode 29 - Aired 1/21/1967

Simon Bar Sinister makes a vacuum gun which he uses to catch Riff Raff, Electric Eel, Batty man and all of their men for his army while Underdog is saving a sinking ship.

The Vacuum Gun (2)
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#14 - The Vacuum Gun (2)

Season 3 - Episode 30 - Aired 1/21/1967

Sweet Polly is captured by Simon and calls for Underdog. Unfortunately, his energy was drained from saving the ship so he and Polly were sucked in the vacuum gun and Simon starts to fill it with water.

The Vacuum Gun (3)
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#15 - The Vacuum Gun (3)

Season 3 - Episode 31 - Aired 1/28/1967

Underdog's ring has fallen off his finger; Polly dives underwater to find it. Meanwhile, Simon and his army are using their vacuum guns to steal all the money in the US.

The Vacuum Gun (4)
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#16 - The Vacuum Gun (4)

Season 3 - Episode 32 - Aired 1/28/1967

Polly finds Underdog's ring. He takes his energy pill then defeats Electric Eel, Riff Raff and Batty Man. Simon uses his vacuum gun but since Underdog has his powerful strength back, this time it doesn't work. Using his atomic breath, Underdog beats Simon and Cad and returns all the money.

The Phoney Booths (1)
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#17 - The Phoney Booths (1)

Season 3 - Episode 37 - Aired 2/25/1967

Cad, Simon Bar Sinister's henchman, replaces real phone booths with Phoney Booths. When he returns to the lab to tell his boss all the booths have been replaced, he asks what they do. Simon demonstrates by deceiving the milkman that his office wants him to call and directs the unsuspecting milkman into one of the Phoney Booths. The booth jumps and spins and when it opens, the milkman emerges in a trance repeating 'I will do what Simon says'. Simon instructs the milkman to destroy all his milk bottles, then remotely tells him to drive his milk truck into a pole. Then he tells him to go home and await further orders.

The Phoney Booths (2)
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#18 - The Phoney Booths (2)

Season 3 - Episode 38 - Aired 2/25/1967

More unsuspecting people fall prey to Simon's Phoney Booths. A banker steps into a booth and is ordered to bring all the money from the bank. An engineer steps into a booth and is ordered to bring his train to Simon's lab. A colonel steps into the booth and is ordered to bring the army to Simon Bar Sinister's house. On a college campus, students try to see how many they can fit into a booth, but of course, it's a Phoney Booth. Each emerging student is told to do a task. News finally gets to Shoeshine Boy who steps into a booth to become Underdog, but, it is a Phoney Booth.

The Phoney Booths (3)
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#19 - The Phoney Booths (3)

Season 3 - Episode 39 - Aired 3/4/1967

Simon toys with Underdog who is now in his power after stepping into one of Simon's Phoney Booths. He makes him dance, bring the 1st National bank to him, and then has him retrieve the Empire State Building. Meanwhile, O.J. Squeeze, Sweet Polly's boss, informs her that Underdog is in Simon's power. Polly takes it upon herself to go out with an axe and destroy the booths. When Simon catches wind of this, he sends Underdog out to destroy Sweet Polly. Underdog arrives at Polly's location and she is trapped.

The Phoney Booths (4)
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#20 - The Phoney Booths (4)

Season 3 - Episode 40 - Aired 3/4/1967

Simon instructs an entranced Underdog to destroy Polly. As he approaches the trapped reporter, his brain fights the mind control Simon has and finally shatters the bulb above his head breaking free of the mind control. Polly informs Underdog that Simon is behind the Phoney Booths. They head out to Simon's lab to stop him. Seeing them approach, Simon instructs the colonel he has in his power to shoot Underdog down. Underdog puts Polly down to fight the army. One of the projectiles Underdog deflects, lands on the colonel's trance bulb above his head and frees him of Simon's power. Underdog takes several projectiles and blows up Simon's lab and sends a fleeing Simon and Cad hurling into the air landing in a tree.

The Just in Case (3)
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#21 - The Just in Case (3)

Season 3 - Episode 11 - Aired 10/22/1966

Riff and his gang decide to rob one more vessel before they go for their biggest catch, The Queen May. But, Polly has hidden herself as a decoy so that she can call for Underdog once she is on board the Ghost Ship. When the gang opens the contents of the merchant ship they just robbed, Polly emerges and runs calling for Underdog. They capture her but the gang is fearful that her cries will bring Underdog. At this point, Riff finally reveals what 'Just in Case' is,...Just in Case Underdog comes! The disguised fella is really a witch doctor who, along with a voodoo doll in the form of Underdog, is able to manipulate our hero and leave him helpless

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Underdog Versus Overcat (2)
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#22 - Underdog Versus Overcat (2)

Season 3 - Episode 2 - Aired 9/17/1966

Polly tells Overcat about Underdog but he is not worried; he kidnaps her to milk the cows. Polly calls for Underdog. When he gets to Overcat's planet, he is placed in a rubber ball trap that drains his energy. He is taken to help Polly milk the cows.

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Underdog Versus Overcat (3)
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#23 - Underdog Versus Overcat (3)

Season 3 - Episode 3 - Aired 9/24/1966

Polly gives Underdog his energy pill and he beats Overcat's men. Next, Underdog takes Polly and the cows back to earth. Overcat challenges Underdog to a fight for the cows. If Underdog refuses, Overcat will attack Earth.

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Underdog Versus Overcat (4)
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#24 - Underdog Versus Overcat (4)

Season 3 - Episode 4 - Aired 9/24/1966

At first it look like Overcat is going to win. But even though he's as strong as Underdog, he's not fast. Underdog uses his speed to beat Overcat. When the cats kick Overcat out of Felina, Underdog gives them coconut trees so they never run out of milk.

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The Big Dipper (1)
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#25 - The Big Dipper (1)

Season 3 - Episode 5 - Aired 10/1/1966

Sinister and Cad invent another evil device they call the Big Dipper, a machine that can dry up all of the world's water supplies. On its first trials, the Big Dipper does little more than flooding Simon's lab. After a few false starts, the Big Dipper is finally ready to destroy the world's water supply and Simon may finally have a means of taking over the world!

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