20 Awesome Underdog T-Shirts

Check out our discoveries of the most awesome Underdog T-Shirts below. We simply find and round up all Underdog T-Shirts scattered around the Internet that we think are cool so that you don't have to. If you find these Underdog T-Shirts really cool, do not hesitate to share with your friends.
* The list below contains affiliate links, which means if you make a purchase after clicking on a link below we may earn a small commission at no extra cost to you.
1 Flying UnderDog T-Shirt Flying UnderDog T-Shirt

When criminals in this world appear, the cry goes up both far and near for Underdog. This t-shirt shows the canine superhero flying with his trusty ring. The secret compartment of his ring he fills with Underdog super energy pills. Since 1964, Underdog has been entertaining audiences, while taking on villains like Simon Bar Sinister and Riff Raff. Now, you can show that you are a fan of Underdog with this Flying t-shirt.

$24.00
2 Flying Underdog Shirt Flying Underdog Shirt

It’s not a plane, nor a bird, nor even a frog. It’s just little old Underdog!” Dontchya just love Underdog’s sense of civic responsibility whenever he careens into a building, utterly destroying it? Does he stop and repair it? Does he save billions of tax dollars in clean up? No, of course not. He sets the standard for all Superheroes to follow, with a rhyme, “I am a hero who never fails; I cannot be bothered with such details.” Darn tootin’! Can’t pick up bricks when Polly Purebred is waiting for him. Having never heard of Underdog, when our youngest workers like Crystal, see our Flying Underdog Shirt, they always think it’s Scooby.

$20.00
3 Underdog Costume T-Shirt Underdog Costume T-Shirt

You don’t have to be Shoeshine Boy to become Underdog. All you need is this Underdog costume t-shirt, and you’ll look just like the only hero with speed of lightning, roar of thunder. Mostly everyone will love seeing you in this costume shirt. Everyone, except all who rob or plunder. They will run in fear in the other direction. This costume t-shirt is perfect for any fan of Underdog.

$18.95 – $20.95
4 Flexing Underdog T-Shirt Flexing Underdog T-Shirt

There’s No Need To Fear! UNDERDOG is HERE! This shirt features Underdog flexing his biceps underneath his logo.

$14.95
5 Underdog Sublimation T-Shirt Underdog Sublimation T-Shirt

He is a hero who never fails, he cannot be bothered with such details. He is Underdog, and the popular cartoon character appears on this sublimated shirt in a heroic pose. Now, you can show that you are a fan of Underdog with this soft and comfortable t-shirt. When people see you in this shirt, all they’ll be able to say is “Have no fear, Underdog is here”.

$35.00
6 Underdog Shirt U Crest Adult Heather Red Tee T-Shirt Underdog Shirt U Crest Adult Heather Red Tee T-Shirt

Underdog Shirt U Crest Adult Heather Red Tee T-Shirt

$19.99
7 Underdog Shirt Outline Under Adult Heather Red Tee T-Shirt Underdog Shirt Outline Under Adult Heather Red Tee T-Shirt

Underdog Shirt Outline Under Adult Heather Red Tee T-Shirt

$19.99
8 Underdog Shirt Outline Under Long Sleeve Red Tee T-Shirt Underdog Shirt Outline Under Long Sleeve Red Tee T-Shirt

Underdog Shirt Outline Under Long Sleeve Red Tee T-Shirt

$19.99
9 Underdog Shirt U Crest Long Sleeve Red Tee T-Shirt Underdog Shirt U Crest Long Sleeve Red Tee T-Shirt

Underdog Shirt U Crest Long Sleeve Red Tee T-Shirt

$19.99
10 Underdog Flexing Sublimation Juniors Shirt Underdog Flexing Sublimation Juniors Shirt

Underdog Flexing Sublimation Juniors Shirt

$24.99
11 Underdog Burst Sublimation Juniors Shirt Underdog Burst Sublimation Juniors Shirt

Underdog Burst Sublimation Juniors Shirt

$24.99
12 Underdog Shirt Outline Under Juniors Red Tee T-Shirt Underdog Shirt Outline Under Juniors Red Tee T-Shirt

Underdog Shirt Outline Under Juniors Red Tee T-Shirt

$19.99
13 Underdog Shirt U Crest Juniors Red Tee T-Shirt Underdog Shirt U Crest Juniors Red Tee T-Shirt

Underdog Shirt U Crest Juniors Red Tee T-Shirt

$19.99
14 Underdog Shirt U Crest Adult Red Tee T-Shirt Underdog Shirt U Crest Adult Red Tee T-Shirt

Underdog Shirt U Crest Adult Red Tee T-Shirt

$24.99
15 Underdog Shirt Outline Under Adult Red Tee T-Shirt Underdog Shirt Outline Under Adult Red Tee T-Shirt

Underdog Shirt Outline Under Adult Red Tee T-Shirt

$24.99
16 Underdog Shirt Flying Logo Adult Slate Tee T-Shirt Underdog Shirt Flying Logo Adult Slate Tee T-Shirt

Underdog Shirt Flying Logo Adult Slate Tee T-Shirt

$24.99
17 Underdog Burst Sublimation Shirt Underdog Burst Sublimation Shirt

Underdog Burst Sublimation Shirt

$29.99
18 Underdog Flexing Sublimation Shirt Underdog Flexing Sublimation Shirt

Underdog Flexing Sublimation Shirt

$29.99
19 Underdog Costume T Shirt Sheer Underdog Costume T Shirt Sheer

Underdog Costume T Shirt Sheer – Fly to the rescue at your next Halloween party as Underdog wearing this bright red Underdog t shirt that doubles as a costume! The Underdog Costume T Shirt Sheer has a soft feel and a tailored fit. It features the giant white “U” symbol worn by Underdog, the cartoon superhero pooch. “There’s no need to fear, Underdog is here!”

$19.88
20 Underdog Punch T Shirt Sheer Underdog Punch T Shirt Sheer

Underdog Punch T Shirt Sheer – The mighty Underdog delivers a jarring punch on the front of this fun Underdog t shirt! The Underdog Punch T Shirt Sheer is green with a distressed print, a soft feel and a trim fit. It features the cartoon superhero flying forward, blue cape swirling, with his “U” ring leading the way. The Underdog logo is above in white letters, and a black circle frames the flying pooch!

$19.88

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