The BEST episodes of Underdog season 1

Every episode of Underdog season 1, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Underdog season 1!

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: 1/14/2026Network: NBCStatus: Ended
Saif Waif
star
9.08
50 votes

#1 - Saif Waif

Season 1 - Episode 1 - Aired 10/3/1964

Underdog breaks out of the phone booth, and hears the cries for help again. Underdog flies to the lady, who tells him that her little boy has been accidentally locked in a bank vault. With only this information, Underdog flies off toward the bank. He reaches a bank, crashes in, much to the shock of the occupants, and then proceeds to rip open the giant door to the vault. The bank president blows up at Underdog, saying that he's got the wrong bank! So, Underdog flies to the correct bank, and attempts to rescue the boy. But at first, nothing he tries works. He crashes through the vault door, only to crash through the whole building and the one next door as well. He tries using his X-ray vision to locate the boy, but instead, starts a fire! All the people in the bank are in a panic now! Underdog uses his atomic breath to blow out the fire, and in the process, blows virtually the whole building away! But at least the mother's little boy is found all safe and sound.

Watch Now:Amazon
The Great Gold Robbery (1)
star
8.50
4 votes

#2 - The Great Gold Robbery (1)

Season 1 - Episode 12 - Aired 11/7/1964

Riff-Raff is no longer Public Enemy No. 1, so he comes up with the ultimate plan: robbing a trainload of gold by distracting Underdog from his duties of protecting the gold on the train.

Watch Now:Amazon
The Bubbleheads (2)
star
8.50
2 votes

#3 - The Bubbleheads (2)

Season 1 - Episode 25 - Aired 12/26/1964

Watch Now:Amazon
Go Snow (4)
star
8.00
2 votes

#4 - Go Snow (4)

Season 1 - Episode 7 - Aired 10/24/1964

Watch Now:Amazon
Zot (1)
star
8.00
2 votes

#5 - Zot (1)

Season 1 - Episode 8 - Aired 10/24/1964

Underdog is having an average day. He foils a bank robbery, rescued Sweet Polly and made himself useful across the world. Meanwhile, a million, million miles away on the planet Zot, King Klobber is upset. It seams that his daughter the princess wants to get married and can't find anyone suitable.

Watch Now:Amazon
The Great Gold Robbery (4)
star
8.00
2 votes

#6 - The Great Gold Robbery (4)

Season 1 - Episode 15 - Aired 11/21/1964

The train full of gold is about to crash into another train, with Riff-Raff's plan going just as he expected. However, Underdog has just rescued Sweet Polly and manages to make it in time, stopping the two trains before a major derailment occurs. Underdog then chases Riff-Raff throughout the station winds up catching Riff-Raff, and all is well once again.

Watch Now:Amazon
The Big Shrink (2)
star
8.00
2 votes

#7 - The Big Shrink (2)

Season 1 - Episode 21 - Aired 12/12/1964

After being shrunk by Simon Bar-Sinister Underdog and Polly are imprisoned in a birdcage in Simon's lair. They escape into the garden and hide in a rat hole where they are attacked by the rats living there.

Watch Now:Amazon
The Big Shrink (3)
star
8.00
1 votes

#8 - The Big Shrink (3)

Season 1 - Episode 22 - Aired 12/12/1964

The shrunken Underdog and Polly make their way through Simon's garden to try and stop Simon's plans, facing rats and eagle attacks. Meanwhile Simon sets up his cloud making machine to create a cloud of shrinking water over the city.

Watch Now:Amazon
The Big Shrink (4)
star
8.00
2 votes

#9 - The Big Shrink (4)

Season 1 - Episode 23 - Aired 12/19/1964

Simon shrinks the inhabitants of the city, as well as his henchman so he can be the tallest man in the world and then lies down for a rest. While Simon is asleep Underdog uses a double dose of shrinking water on Simon to make him smaller than everybody else and then tickles the shrinking cure out of him.

Watch Now:Amazon
The Bubbleheads (1)
star
8.00
2 votes

#10 - The Bubbleheads (1)

Season 1 - Episode 24 - Aired 12/19/1964

Watch Now:Amazon
From Hopeless to Helpless (3)
star
8.00
2 votes

#11 - From Hopeless to Helpless (3)

Season 1 - Episode 30 - Aired 1/9/1965

Watch Now:Amazon
The Great Gold Robbery (3)
star
7.67
3 votes

#12 - The Great Gold Robbery (3)

Season 1 - Episode 14 - Aired 11/14/1964

Underdog is still confused and frustrated trying to find Sweet Polly among all the balloons, so far only coming across the record players Riff Raff's gang implanted in the balloons. But then Sweet Polly's balloon springs a leak and is plummeting towards earth toward a hungry alligator. Underdog then finds the real Polly in trouble and saves her from danger. Meanwhile Riff-Raff and his gang take over a railroad station, planning to throw the switch so the gold train Underdog was guarding will collide with another train.

The Bubbleheads (3)
star
7.50
2 votes

#13 - The Bubbleheads (3)

Season 1 - Episode 26 - Aired 12/26/1964

From Hopeless to Helpless (4)
star
7.50
2 votes

#14 - From Hopeless to Helpless (4)

Season 1 - Episode 31 - Aired 1/16/1965

From Hopeless to Helpless (2)
star
7.50
2 votes

#15 - From Hopeless to Helpless (2)

Season 1 - Episode 29 - Aired 1/9/1965

From Hopeless to Helpless (1)
star
7.50
2 votes

#16 - From Hopeless to Helpless (1)

Season 1 - Episode 28 - Aired 1/2/1965

Fearo (3)
star
7.50
2 votes

#17 - Fearo (3)

Season 1 - Episode 18 - Aired 11/28/1964

"Fearo the Ferocious" captures Captain Coward. It's Underdog to the rescue.

Zot (3)
star
7.50
4 votes

#18 - Zot (3)

Season 1 - Episode 10 - Aired 10/31/1964

As the story of Zot continues King Klobber of Zot sends a spaceship to capture Sweet Polly Purebred. He holds Polly under "The Great Zot", a 10 ton weight. When Underdog arrives to save Polly he agrees to marry the princess if Polly is returned safely to Earth.

Go Snow (2)
star
7.50
2 votes

#19 - Go Snow (2)

Season 1 - Episode 5 - Aired 10/17/1964

Tricky Trap by Tap-Tap
star
7.50
2 votes

#20 - Tricky Trap by Tap-Tap

Season 1 - Episode 32 - Aired 1/16/1965

Underdog's double, an evil criminal, plots to steal a priceless diamond after he escapes from prison.

Simon Says
star
7.33
6 votes

#21 - Simon Says

Season 1 - Episode 3 - Aired 10/10/1964

Simon, a mad scientist, creates a camera. This is not some ordinary camera however. When he takes someone's picture, the freezes them in the photograph!

Go Snow (1)
star
7.25
4 votes

#22 - Go Snow (1)

Season 1 - Episode 4 - Aired 10/10/1964

Simon Bar Sinister creates a new super weapon: the Go-Snow Gun. The gun freezes people, turning them into snow people. Simon and his Henchman Cad take over the First National Bank, holding the bank President, his staff and customers prisoner.

March of the Monsters
star
7.00
7 votes

#23 - March of the Monsters

Season 1 - Episode 2 - Aired 10/3/1964

An army of giant robots take over the city and capture Polly. Underdog foils the monsters by using his high-pitched voice to destroy the robots' electronic brains. The robots aren't the only thing destroyed, but so is all of the city's glassware.

Watch Now:Apple TV
Go Snow (3)
star
7.00
1 votes

#24 - Go Snow (3)

Season 1 - Episode 6 - Aired 10/17/1964

Zot (2)
star
7.00
4 votes

#25 - Zot (2)

Season 1 - Episode 9 - Aired 10/31/1964

The story of Zot continues with King Klobber searching the galaxy and then the universe for the strongest warrior. They discover Underdog on an insignificant planet named Earth. King Klobber sends a fleet of spaceships to capture underdog and return him to the planet Zot.