In the Superhero Arc, Mint-Berry Crunch is a member of Coon and Friends, a superhero group led by the Coon. He initially appears to be an entirely ineffectual member of the group, with the powers of a breakfast cereal mascot, to the confusion of the other members. In "Coon 2: Hindsight", the Coon brutally assaults Mint-Berry Crunch and Mosquito in an attempt to consolidate his influence in the group. However, he is unanimously voted out of the group instead.
In "Coon vs. Coon & Friends", as the group is congregated in the basement of Cartman's house, Cartman returns home and lures them out with the promise of witnessing a "double rainbow". However, it is revealed that Cthulhu, recently released from an inter-dimensional portal in the Gulf of Mexico, is working for Cartman. At the sight of Cthulhu, Mint-Berry Crunch quickly runs away, leaving the other Coon and Friends to deal with the problem themselves. Having escaped from danger, he returns home to "heroically" watch Judge Judy, while the other members of the group are sent to an alternate dimension by Cthulhu.
Meanwhile, after successfully escaping the pocket dimension by committing suicide, Mysterion visits Bradley's sister and her friends, the Goth Kids. Bradley unexpectedly finds him in Henrietta's room when he asks to play with her and her friends. Upon seeing Mysterion, Bradley re-adopts his superhero persona and joins Mysterion in his quest to stop Cthulhu and find out how mint and berries came together to deliver full flavor in an intense crunch.
As Mysterion confronts Cthulhu, a bright light unexpectedly appears and a holographic representation of an alien begins to explain the shocking truth of Mint-Berry Crunch's origin. The alien man reveals that Bradley's true name is Gokzarah, and that he was originally from the planet Kokujon. The alien man then implores him to use his powers to save the Earth. Following this revelation, Mint-Berry Crunch begins to manifest real superpowers, and uses them to defeat Cthulhu and save the other members of Coon and Friends from R'lyeh.
At the conclusion of the arc, Mint-Berry Crunch announces that he must go out into the universe in order to find answers to the many questions that remain, and leaves in a flash of light and cereal, promising to return someday.
His true identity is revealed in the episode "Coon vs. Coon & Friends". Crunch is actually an alien from a faraway planet: Kokujon, known throughout the universe for its berry mines - berries that have the power to fuel nearly anything. In a holographic message from his extraterrestrial father, Crunch learns that his name is actually Gokzarah and he was sent to earth to stop evil from taking over Earth. His power of mint and berries ("yet with a tasty, satisfying crunch") are the result of a collision between his home planet and the world of intense mint flavor.
Mint-Berry Crunch has blond, bowl-cut hair. He wears a cyan t-shirt with three pink berries and a green, pointed leaf presumably painted, airbrushed, or stuck on. He also wears gray pants that are presumably painted or airbrushed green on the left side. His left sleeve has several (presumably) fake, green leaves protruding from it. He wears black shoes, however, one of his shoes is covered by a green, leaf-like article of clothing. Half of Mint-Berry Crunch's face is (presumably) painted to resemble a pink berry. He also has a black stem protruding from the top center of his head. In place of paint, he may be wearing part of a mask to cover his face, however, it's lack of movement when he moves hints that it may be painted on, although this could be attributed to South Park's simple style of animation.
Mint-Berry Crunch was cowardly before realizing he had actual superpowers, even peeing his pants when Mysterion tried to convince Coon and Friends that he had actual superpowers. After he learned he had actual superpowers, he became extremely heroic as well as brave, even confronting Cthulhuwithout hesitation.
Bradley Biggle transforms into Mint-Berry Crunch by spinning in place and saying "Shablagoo!!" His power is stated to be the "the power of mint and berries, yet with a satisfying, tasty crunch!" Being one of only two members of Coon and Friends to have actual superpowers, his power manifests as the power of flight, super strength and the ability to wield mint and berries as weapons. He is also shown to be able to create large pink bubbles which can protect the objects inside.
- Mint-Berry Crunch was added to the short introductory clip played before episodes on South Park Studios, flying in a circle over the usual intro characters while shooting mint and berries.
- A Mint-Berry Crunch comic can be seen in Clyde's bathroom in "Reverse Cowgirl".
- "Coon 2: Hindsight"
- "Mysterion Rises"
- "Coon vs. Coon & Friends"
- "Reverse Cowgirl" - cameo