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Underdog

6.419643 seasonsTV SeriesAnimationComedy

Underdog, also known as The Underdog Show, is an American Saturday morning animated television series that ran from October 3, 1964, to March 4, 1967, starting on the NBC network until 1966, with the rest of the run on CBS, under the…

Where to watch

Not available in United States
Streaming in 1 other country

Underdog isn't on any streaming service in United States right now, but it's available in Brazil. Streaming rights are licensed per country.

Seasons & Episodes

E1
Underdog vs. Overcat, Part 1
Jan 15, 1966
E2
Underdog vs. Overcat, Part 2
Jan 15, 1966
E3
Underdog vs. Overcat, Part 3
Jan 22, 1966
E4
Underdog vs. Overcat, Part 4
Jan 22, 1966
E5
The Big Dipper, Part 1
Jan 29, 1966
E6
The Big Dipper, Part 2
Jan 29, 1966
E7
The Big Dipper, Part 3
Feb 5, 1966
E8
The Big Dipper, Part 4
Feb 5, 1966
E9
Just in Case, Part 1
Sep 10, 1966
E10
Just In Case, Part 2
Sep 10, 1966
E11
Just In Case, Part 3
Sep 17, 1966
E12
Just In Case, Part 4
Sep 17, 1966
E13
The Marbleheads, Part 1
Sep 24, 1966
E14
The Marbleheads, Part 2
Sep 24, 1966
E15
The Marbleheads, Part 3
Oct 1, 1966
E16
The Marbleheads, Part 4
Oct 1, 1966
E17
Simon Says, Be my Valentine, Part 1
Oct 8, 1966
E18
Simon Says 'Be My Valentine', Part 2
Oct 8, 1966
E19
Simon Says 'Be My Valentine', Part 3
Oct 15, 1966
E20
Simon Says 'Be My Valentine', Part 4
Oct 15, 1966
E21
Round and Round, Pt 1
Oct 22, 1966
E22
Round and Round, Pt 2
Oct 22, 1966
E23
Round and Round, Pt 3
Oct 29, 1966
E24
Round and Round, Pt 4
Oct 29, 1966
E25
A New Villain, Part 1
Nov 5, 1966
E26
A New Villain, Part 2
Nov 5, 1966
E27
A New Villain, Part 3
Nov 12, 1966
E28
A New Villain, Part 4
Nov 12, 1966
E29
Batty Man, Part 1
Nov 19, 1966
E30
Batty Man, Part 2
Nov 19, 1966
E31
Batty Man, Part 3
Nov 26, 1966
E32
Batty Man, Part 4
Nov 26, 1966
E33
The Vacuum Gun, Part 1
Dec 3, 1966
E34
The Vacuum Gun, Part 2
Dec 3, 1966
E35
The Vacuum Gun, Part 3
Dec 10, 1966
E36
The Vacuum Gun, Part 4
Dec 10, 1966
E37
Phoney Booths, Part 1
Sep 4, 1965
E38
Phoney Booths, Part 2
Sep 4, 1965
E39
Phoney Booths, Part 3
Sep 11, 1965
E40
Phoney Booths, Part 4
Sep 11, 1965

Cast

Wally Cox
Wally Cox
Sandy Becker
Sandy Becker
Kenny Delmar
Kenny Delmar
George S. Irving
George S. Irving
Mort Marshall
Mort Marshall
Norma MacMillan
Norma MacMillan
Delo States
Delo States
Ben Stone
Ben Stone
Allen Swift
Allen Swift

More like this

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2013 · 7.0
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1991 · 7.4
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2004 · 7.5
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2020 · 8.4
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1995 · 7.8
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1995 · 7.5
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Underdog — streaming FAQ

Which OTT platform streams Underdog?

Underdog isn't on any streaming service in United States yet, but it's available in Brazil. Streaming rights differ by country — switch your country in the header to see where.

Is Underdog on Netflix?

No, Underdog is not on Netflix in United States as of August 2026.

Is Underdog on Amazon Prime Video?

No, Underdog isn't on Amazon Prime Video in United States right now.

Where can I watch Underdog for free?

Underdog isn't streaming in United States yet, so there's no way to watch it free at the moment.

How many seasons are in Underdog?

Underdog has 3 seasons in total (129 episodes). The series concluded in 1966.

Are all episodes of Underdog out yet?

Yes — all 129 episodes across 3 seasons of Underdog are out and available to stream.

Is there a Season 4 of Underdog?

No — Underdog ended after 3 seasons, so there is no Season 4.