Underdog is an American animated television series that debuted October 3, 1964, on the NBC network under the primary sponsorship of General Mills, and continued in syndication until 1973, for a run of 124 episodes. Underdog, Shoeshine Boy's heroic alter-ego, appeared whenever love interest Sweet Polly Purebred was being victimized by such villains as Simon Bar Sinister or Riff Raff. Underdog nearly always speaks in rhyme, as in, "There's no need to fear, Underdog is here!" His voice was supplied by Wally Cox.
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| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Safe Waif | 1964-10-03 | 30 min |
| Season 1 | Episode 2 | March of the Monsters | 1964-10-03 | 30 min |
| Season 1 | Episode 3 | Simon Says | 1964-10-10 | 30 min |
| Season 1 | Episode 4 | Go Snow Part 1 | 1964-10-17 | 30 min |
| Season 1 | Episode 5 | Go Snow Part 2 | 1964-10-17 | 30 min |
| Season 1 | Episode 6 | Go Snow Part 3 | 1964-10-24 | 30 min |
| Season 1 | Episode 7 | Go Snow Part 4 | 1964-10-24 | 30 min |
| Season 1 | Episode 8 | Tricky Trap by Tap Tap | 1964-10-10 | 30 min |
| Season 1 | Episode 9 | Zot Part, 1 | 1964-10-31 | 30 min |
| Season 1 | Episode 10 | Zot, Part 2 | 1964-10-31 | 30 min |
| Season 1 | Episode 11 | Zot, Part 3 | 1964-11-07 | 30 min |
| Season 1 | Episode 12 | Zot, Part 4 | 1964-11-07 | 30 min |
| Season 1 | Episode 13 | The Great Gold Robbery, Part 1 | 1964-11-14 | 30 min |
| Season 1 | Episode 14 | The Great Gold Robbery, Part 2 | 1964-11-14 | 30 min |
| Season 1 | Episode 15 | The Great Gold Robbery, Part 3 | 1964-11-21 | 30 min |
| Season 1 | Episode 16 | The Great Gold Robbery, Part 4 | 1964-11-21 | 30 min |
| Season 1 | Episode 17 | Fearo The Ferocious, Part 1 | 1964-11-28 | 30 min |
| Season 1 | Episode 18 | Fearo The Ferocious, Part 2 | 1964-11-28 | 30 min |
| Season 1 | Episode 19 | Fearo The Ferocious, Part 3 | 1964-12-05 | 30 min |
| Season 1 | Episode 20 | Fearo The Ferocious, Part 4 | 1964-12-05 | 30 min |
| Season 1 | Episode 21 | The Big Shrink, Part 1 | 1964-12-12 | 30 min |
| Season 1 | Episode 22 | The Big Shrink, Part 2 | 1964-12-12 | 30 min |
| Season 1 | Episode 23 | The Big Shrink, Part 3 | 1964-12-19 | 30 min |
| Season 1 | Episode 24 | The Big Shrink, Part 4 | 1964-12-19 | 30 min |
| Season 1 | Episode 25 | The Bubbleheads, Part 1 | 1964-12-26 | 30 min |
| Season 1 | Episode 26 | The Bubbleheads, Part 2 | 1964-12-26 | 30 min |
| Season 1 | Episode 27 | The Bubbleheads, Part 3 | 1965-01-02 | 30 min |
| Season 1 | Episode 28 | The Bubbleheads, Part 4 | 1965-01-02 | 30 min |
| Season 1 | Episode 29 | From Hopeless to Helpless, Part 1 | 1965-01-09 | 30 min |
| Season 1 | Episode 30 | From Hopeless to Helpless, Part 2 | 1965-01-09 | 30 min |
| Season 1 | Episode 31 | From Hopeless to Helpless, Part 3 | 1965-01-16 | 30 min |
| Season 1 | Episode 32 | From Hopeless to Helpless, Part 4 | 1965-01-16 | 30 min |
| Season 2 | Episode 1 | The Witch Of Pickyoon, Part 1 | 1965-01-23 | 30 min |
| Season 2 | Episode 2 | The Witch Of Pickyoon, Part 2 | 1965-01-23 | 30 min |
| Season 2 | Episode 3 | The Witch Of Pickyoon, Part 3 | 1965-01-30 | 30 min |
| Season 2 | Episode 4 | The Witch Of Pickyoon, Part 4 | 1965-01-30 | 30 min |
| Season 2 | Episode 5 | Weathering The Storm, Part 1 | 1965-02-06 | 30 min |
| Season 2 | Episode 6 | Weathering The Storm, Part 2 | 1965-02-06 | 30 min |
| Season 2 | Episode 7 | Weathering The Storm, Part 3 | 1965-02-13 | 30 min |
| Season 2 | Episode 8 | Weathering The Storm, Part 4 | 1965-02-13 | 30 min |
| Season 2 | Episode 9 | The Magnet Men, Part 1 | 1965-02-20 | 30 min |
| Season 2 | Episode 10 | The Magnet Men, Part 2 | 1965-02-20 | 30 min |
| Season 2 | Episode 11 | The Magnet Men, Part 3 | 1965-02-27 | 30 min |
| Season 2 | Episode 12 | The Magnet Men, Part 4 | 1965-02-27 | 30 min |
| Season 2 | Episode 13 | The Gold Bricks, Part 1 | 1965-03-06 | 30 min |
| Season 2 | Episode 14 | The Gold Bricks, Part 2 | 1965-03-06 | 30 min |
| Season 2 | Episode 15 | The Gold Bricks, Part 3 | 1965-03-13 | 30 min |
| Season 2 | Episode 16 | The Gold Bricks, Part 4 | 1965-03-13 | 30 min |
| Season 2 | Episode 17 | Pain Strikes Underdog, Part 1 | 1965-09-18 | 30 min |
| Season 2 | Episode 18 | Pain Strikes Underdog, Part 2 | 1965-09-18 | 30 min |
| Season 2 | Episode 19 | Pain Strikes Underdog, Part 3 | 1965-09-25 | 30 min |
| Season 2 | Episode 20 | Pain Strikes Underdog, Part 4 | 1965-09-25 | 30 min |
| Season 2 | Episode 21 | The Molemen, Part 1 | 1965-10-02 | 30 min |
| Season 2 | Episode 22 | The Molemen, Part 2 | 1965-10-02 | 30 min |
| Season 2 | Episode 23 | The Molemen, Part 3 | 1965-10-09 | 30 min |
| Season 2 | Episode 24 | The Molemen, Part 4 | 1965-10-09 | 30 min |
| Season 2 | Episode 25 | The Flying Sorcerers, Part 1 | 1965-10-16 | 30 min |
| Season 2 | Episode 26 | The Flying Sorcerers, Part 2 | 1965-10-16 | 30 min |
| Season 2 | Episode 27 | The Flying Sorcerers, Part 3 | 1965-10-23 | 30 min |
| Season 2 | Episode 28 | The Flying Sorcerers, Part 4 | 1965-10-23 | 30 min |
| Season 2 | Episode 29 | The Forget-Me-Net, Part 1 | 1965-10-30 | 30 min |
| Season 2 | Episode 30 | The Forget-Me-Net, Part 2 | 1965-10-30 | 30 min |
| Season 2 | Episode 31 | The Forget-Me-Net, Part 3 | 1965-11-06 | 30 min |
| Season 2 | Episode 32 | The Forget-Me-Net, Part 4 | 1965-11-06 | 30 min |
| Season 2 | Episode 33 | Whistler's Father, Part 1 | 1965-11-13 | 30 min |
| Season 2 | Episode 34 | Whistler's Father, Part 2 | 1965-11-13 | 30 min |
| Season 2 | Episode 35 | Whistler's Father, Part 3 | 1965-11-20 | 30 min |
| Season 2 | Episode 36 | Whistler's Father, Part 4 | 1965-11-20 | 30 min |
| Season 2 | Episode 37 | Simon Says.. No Thanksgiving, Part 1 | 1965-11-25 | 30 min |
| Season 2 | Episode 38 | Simon Says.. No Thanksgiving, Part 2 | 1965-11-25 | 30 min |
| Season 2 | Episode 39 | Simon Says.. No Thanksgiving, Part 3 | 1965-11-27 | 30 min |
| Season 2 | Episode 40 | Simon Says.. No Thanksgiving, Part 4 | 1965-11-27 | 30 min |
| Season 2 | Episode 41 | The Silver Thieves, Part 1 | 1965-12-04 | 30 min |
| Season 2 | Episode 42 | The Silver Thieves, Part 2 | 1965-12-04 | 30 min |
| Season 2 | Episode 43 | The Silver Thieves, Part 3 | 1965-12-11 | 30 min |
| Season 2 | Episode 44 | The Silver Thieves, Part 4 | 1965-12-11 | 30 min |
| Season 2 | Episode 45 | RiffRaffville, Part 1 | 1965-12-18 | 30 min |
| Season 2 | Episode 46 | RiffRaffville, Part 2 | 1965-12-18 | 30 min |
| Season 2 | Episode 47 | RiffRaffville, Part 3 | 1965-12-25 | 30 min |
| Season 2 | Episode 48 | RiffRaffville, Part 4 | 1965-12-25 | 30 min |
| Season 2 | Episode 49 | The Tickle Feather Machine, Part 1 | 1966-01-01 | 30 min |
| Season 2 | Episode 50 | The Tickle Feather Machine, Part 2 | 1966-01-01 | 30 min |
| Season 2 | Episode 51 | The Tickle Feather Machine, Part 3 | 1966-01-08 | 30 min |
| Season 2 | Episode 52 | The Tickle Feather Machine, Part 4 | 1966-01-08 | 30 min |
| Season 3 | Episode 1 | Underdog vs. Overcat, Part 1 | 1966-09-17 | 30 min |
| Season 3 | Episode 2 | Underdog vs. Overcat, Part 2 | 1966-09-17 | 30 min |
| Season 3 | Episode 3 | Underdog vs. Overcat, Part 3 | 1966-09-24 | 30 min |
| Season 3 | Episode 4 | Underdog vs. Overcat, Part 4 | 1966-09-24 | 30 min |
| Season 3 | Episode 5 | The Big Dipper, Part 1 | 1966-10-01 | 30 min |
| Season 3 | Episode 6 | The Big Dipper, Part 2 | 1966-10-01 | 30 min |
| Season 3 | Episode 7 | The Big Dipper, Part 3 | 1966-10-08 | 30 min |
| Season 3 | Episode 8 | The Big Dipper, Part 4 | 1966-10-08 | 30 min |
| Season 3 | Episode 9 | Just In Case, Part 1 | 1966-10-15 | 30 min |
| Season 3 | Episode 10 | Just In Case, Part 2 | 1966-10-15 | 30 min |
| Season 3 | Episode 11 | Just In Case, Part 3 | 1966-10-22 | 30 min |
| Season 3 | Episode 12 | Just In Case, Part 4 | 1966-10-22 | 30 min |
| Season 3 | Episode 13 | The Marbleheads, Part 1 | 1966-10-29 | 30 min |
| Season 3 | Episode 14 | The Marbleheads, Part 2 | 1966-10-29 | 30 min |
| Season 3 | Episode 15 | The Marbleheads, Part 3 | 1966-11-05 | 30 min |
| Season 3 | Episode 16 | The Marbleheads, Part 4 | 1966-11-05 | 30 min |
| Season 3 | Episode 17 | Simon Says 'Be My Valentine', Part 1 | 1967-02-11 | 30 min |
| Season 3 | Episode 18 | Simon Says 'Be My Valentine', Part 2 | 1967-02-11 | 30 min |
| Season 3 | Episode 19 | Simon Says 'Be My Valentine', Part 3 | 1967-02-18 | 30 min |
| Season 3 | Episode 20 | Simon Says 'Be My Valentine', Part 4 | 1967-02-18 | 30 min |
| Season 3 | Episode 21 | Round And Round, Part 1 | 1966-11-12 | 30 min |
| Season 3 | Episode 22 | Round And Round, Part 2 | 1966-11-12 | 30 min |
| Season 3 | Episode 23 | Round And Round, Part 3 | 1966-11-19 | 30 min |
| Season 3 | Episode 24 | Round And Round, Part 4 | 1966-11-19 | 30 min |
| Season 3 | Episode 25 | A New Villain, Part 1 | 1966-12-10 | 30 min |
| Season 3 | Episode 26 | A New Villain, Part 2 | 1966-12-10 | 30 min |
| Season 3 | Episode 27 | A New Villain, Part 3 | 1966-12-17 | 30 min |
| Season 3 | Episode 28 | A New Villain, Part 4 | 1966-12-17 | 30 min |
| Season 3 | Episode 29 | Batty Man, Part 1 | 1967-01-07 | 30 min |
| Season 3 | Episode 30 | Batty Man, Part 2 | 1967-01-07 | 30 min |
| Season 3 | Episode 31 | Batty Man, Part 3 | 1967-01-14 | 30 min |
| Season 3 | Episode 32 | Batty Man, Part 4 | 1967-01-14 | 30 min |
| Season 3 | Episode 33 | The Vacuum Gun, Part 1 | 1967-01-21 | 30 min |
| Season 3 | Episode 34 | The Vacuum Gun, Part 2 | 1967-01-21 | 30 min |
| Season 3 | Episode 35 | The Vacuum Gun, Part 3 | 1967-01-28 | 30 min |
| Season 3 | Episode 36 | The Vacuum Gun, Part 4 | 1967-01-28 | 30 min |
| Season 3 | Episode 37 | Phoney Booths, Part 1 | 1967-02-25 | 30 min |
| Season 3 | Episode 38 | Phoney Booths, Part 2 | 1967-02-25 | 30 min |
| Season 3 | Episode 39 | Phoney Booths, Part 3 | 1967-03-04 | 30 min |
| Season 3 | Episode 40 | Phoney Booths, Part 4 | 1967-03-04 | 30 min |
