Underdog Episodes
Season 1 (1964-1965)

Safe Waif [pilot]
March Of The Monsters 
Go Snow, Part 1 
Go Snow, Part 2 
Go Snow, Part 3 
Go Snow, Part 4 
Simon Says 
Tricky Trap By Tap Tap 
Zot, Part 1 
Zot, Part 2 
Zot, Part 3 
Zot, Part 4 
The Great Gold Robbery, Part 1 
The Great Gold Robbery, Part 2 
The Great Gold Robbery, Part 3 
The Great Gold Robbery, Part 4 
Fearo, Part 1 
Fearo, Part 2 
Fearo, Part 3 
Fearo, Part 4 
The Big Shrink, Part 1 
The Big Shrink, Part 2 
The Big Shrink, Part 3 
The Big Shrink, Part 4 
The Bubbleheads, Part 1 
The Bubbleheads, Part 2 
The Bubbleheads, Part 3 
The Bubbleheads, Part 4 
From Hopeless To Helpless, Part 1 
From Hopeless To Helpless, Part 2 
From Hopeless To Helpless, Part 3 
From Hopeless To Helpless, Part 4

Season 2 (1965-1966)
(52 Episodes In Season 2)

The Wicked Witch Of Pickyoon, Part 1 
The Wicked Witch Of Pickyoon, Part 2 
The Wicked Witch Of Pickyoon, Part 3 
The Wicked Witch Of Pickyoon, Part 4 
Weathering The Storm, Part 1 
Weathering The Storm, Part 2 
Weathering The Storm, Part 3 
Weathering The Storm, Part 4 
The Magnet Men, Part 1 
The Magnet Men, Part 2 
The Magnet Men, Part 3 
The Magnet Men, Part 4 
The Gold Bricks, Part 1 
The Gold Bricks, Part 2 
The Gold Bricks, Part 3 
The Gold Bricks, Part 4 
Pain Strikes Underdog, Part 1 
Pain Strikes Underdog, Part 2 
Pain Strikes Underdog, Part 3 
Pain Strikes Underdog, Part 4 
The Molemen, Part 1 
The Molemen, Part 2 
The Molemen, Part 3 
The Molemen, Part 4 
The Flying Sorcerers, Part 1 
The Flying Sorcerers, Part 2 
The Flying Sorcerers, Part 3 
The Flying Sorcerers, Part 4 
The Forget-Me-Not, Part 1 
The Forget-Me-Not, Part 2 
The Forget-Me-Not, Part 3 
The Forget-Me-Not, Part 4 
Whistler's Father, Part 1 
Whistler's Father, Part 2 
Whistler's Father, Part 3 
Whistler's Father, Part 4 
Simon Says "No Thanksgiving", Part 1 
Simon Says "No Thanksgiving", Part 2 
Simon Says "No Thanksgiving", Part 3 
Simon Says "No Thanksgiving", Part 4 
The Silver Thieves, Part 1 
The Silver Thieves, Part 2 
The Silver Thieves, Part 3 
The Silver Thieves, Part 4 
RiffRaffville, Part 1 
RiffRaffville, Part 2 
RiffRaffville, Part 3 
RiffRaffville, Part 4 
The Tickle Feather Machine, Part 1 
The Tickle Feather Machine, Part 2 
The Tickle Feather Machine, Part 3 
The Tickle Feather Machine, Part 4

Season 3 (1965-1966)
(40 Episodes In Season 3) 

Underdog vs. Overcat, Part 1 
Underdog vs. Overcat, Part 2 
Underdog vs. Overcat, Part 3 
Underdog vs. Overcat, Part 4 
The Big Dipper, Part 1 
The Big Dipper, Part 2 
The Big Dipper, Part 3 
The Big Dipper, Part 4 
Just In Case, Part 1 
Just In Case, Part 2 
Just In Case, Part 3 
Just In Case, Part 4 
The Marbleheads, Part 1 
The Marbleheads, Part 2 
The Marbleheads, Part 3 
The Marbleheads, Part 4 
Simon Says "Be My Valentine", Part 1 
Simon Says "Be My Valentine", Part 2 
Simon Says "Be My Valentine", Part 3 
Simon Says "Be My Valentine", Part 4 
Round And Round, Part 1 
Round And Round, Part 2 
Round And Round, Part 3 
Round And Round, Part 4 
A New Villain, Part 1 
A New Villain, Part 2 
A New Villain, Part 3 
A New Villain, Part 4 
Batty Man, Part 1 
Batty Man, Part 2 
Batty Man, Part 3 
Batty Man, Part 4 
The Vacuum Gun, Part 1 
The Vacuum Gun, Part 2 
The Vacuum Gun, Part 3 
The Vacuum Gun, Part 4 
Phoney Booths, Part 1 
Phoney Booths, Part 2 
Phoney Booths, Part 3 
Phoney Booths, Part 4 


Rips are from various sources, including 8mm,16mm and VHS.
Some of these episodes have not been viewed for nearly 30 years or more, as only a handful were syndicated. Most were not in very good shape and required a bit of clean up to make them presentable

All of the 4-part episodes were put together into single avi files and the 4 single episodes were left independent.

This listing represents the "supposed" creation order ~ but this is strange given the fact that the "Tricky Trap" single episode was supposedly the sequel to a four-parter later in the same season [From Hopeless To Helpless]. This is, however, the entire 124 episode run.

* ~ a LOT of cleanup work went into this project to even get some of them watchable. So appreciate and Enjoy