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Watch Underdog - Season 1 Episode 18 Online!:

After overcoming a mutiny at sea Polly and the gang continue on to the south sea Island to find "Fearo the Ferocious". Upon arriving at the Island Underdog saves the day as he overcomes ferocious dinosaurs.

Release Date: 1964-10-03
Seasons: 1 2 3
TMDb: 6.2/10
  • Country: US
  • Language: English
  • Runtime: 10

Other episodes for this season

Safe Waif
Episode 1 - Safe Waif
March of the Monsters
Episode 2 - March of the Monsters
Simon Says
Episode 3 - Simon Says
Go Snow Part 1
Episode 4 - Go Snow Part 1
Go Snow Part 2
Episode 5 - Go Snow Part 2
Go Snow Part 3
Episode 6 - Go Snow Part 3
Go Snow Part 4
Episode 7 - Go Snow Part 4
Tricky Trap by Tap Tap
Episode 8 - Tricky Trap by Tap Tap
Zot: Part 1
Episode 9 - Zot: Part 1
Zot, Part 2
Episode 10 - Zot, Part 2
Zot, Part 3
Episode 11 - Zot, Part 3
Zot, Part 4
Episode 12 - Zot, Part 4
The Great Gold Robbery, Part 1
Episode 13 - The Great Gold Robbery, P...
The Great Gold Robbery, Part 2
Episode 14 - The Great Gold Robbery, P...
The Great Gold Robbery, Part 3
Episode 15 - The Great Gold Robbery, P...
The Great Gold Robbery, Part 4
Episode 16 - The Great Gold Robbery, P...
Fearo, Part 1
Episode 17 - Fearo, Part 1
Fearo, Part 2
Episode 18 - Fearo, Part 2
Fearo, Part 3
Episode 19 - Fearo, Part 3
Fearo, Part 4
Episode 20 - Fearo, Part 4
The Big Shrink, Part 1
Episode 21 - The Big Shrink, Part 1
The Big Shrink, Part 2
Episode 22 - The Big Shrink, Part 2
The Big Shrink, Part 3
Episode 23 - The Big Shrink, Part 3
The Big Shrink, Part 4
Episode 24 - The Big Shrink, Part 4
The Bubbleheads, Part 1
Episode 25 - The Bubbleheads, Part 1
The Bubbleheads Part 2
Episode 26 - The Bubbleheads Part 2
The Bubbleheads Part 3
Episode 27 - The Bubbleheads Part 3
The Bubbleheads Part 4
Episode 28 - The Bubbleheads Part 4
From Hopeless To Helpless, Part 1
Episode 29 - From Hopeless To Helpless...
From Hopeless To Helpless, Part 2
Episode 30 - From Hopeless To Helpless...
From Hopeless To Helpless, Part 3
Episode 31 - From Hopeless To Helpless...
From Hopeless To Helpless, Part 4
Episode 32 - From Hopeless To Helpless...
The Witch of Pickyoon
Episode 33 - The Witch of Pickyoon