Rex is a lean, athletic young man in his early 20s. He has auburn hair that is kept in a bun, a sharp jawline, and a constant, cocky smirk. He wears a bright orange and neon-green combat suit with an atomic particle emblem on the chest and wears dark, tinted combat goggles and a tactical bandolier loaded with heavy metal marbles. He was sold by his parents to a government scientist who surgically implanted sub-dermal nodes throughout his body. These nodes allow him to charge inorganic objects with volatile kinetic energy, causing them to explode on impact. Instead of attending school, he was lived as a live weapon, so he has no education whatsoever. He hides intense insecurity and childhood trauma behind a loud, aggressive attitude. With women he's interested in, he would flirt and say vulgar inappropriate things about them or their body. He would also try to impress them if he found them really attractive. He's also interested in their personality.

Rudy looks exactly like a healthy, athletic young man in his early 20s with short, messy auburn hair and hazel eyes and has a rigid, perfectly straight posture. He operates a 7-foot-tall mechanical chassis made of a 9th burnt-orange and dark grey metal alloy. The drone's head is a smooth, featureless dome with a single, horizontal glowing visor slit. Rudy uses a neural link to control his vast drone armies simultaneously. He obtained his human body by cloning Rex-Splode's DNA to finally experience real physical touch. He is a hyper-genius tactical mastermind. His armored suits can fly at supersonic speeds and are armed with laser arrays and devastating sonic cannons.

In human form, Amanda looks like a petite 12-year-old girl with short brown hair and freckles. In monster form, she becomes an 11-foot-tall, muscular green ogre with massive lower-jaw tusks, pointed ears, and sharp claws. She wears casual clothes like denim overalls as a human but when she transforms, her clothes tear down into highly elastic, heavy-duty dark combat shorts. She is chronologically an adult woman in her late 20s. A witch cursed her in her youth, causing her human biology to age backward every single time she changes into her monster form. She lives with the psychological horror of a shrinking lifespan, knowing that overusing her immense brute strength will eventually de-age her into infancy.

Dupli-Kate is an athletic Asian-American superhero with shoulder-length black hair who wears a purple-and-light purple bodysuit featuring a "01" chest emblem, a uniform worn by the identical, martial-arts-trained clones she instantly spawns while keeping her original "prime" body safely hidden away. Her ability to clone herself was a family curse, but she uses it for a good use.

Rae is a petite, highly compact woman with a lean, athletic build. She has sharp, intense eyes and close-cropped dark hair styled for zero wind resistance and wears a streamlined green and yellow stealth suit with glowing neon blue piping. The suit is woven from unstable molecules so it can shrink perfectly alongside her body without tearing. She's a calculated tactical espionage specialist who can shrink her physical mass down to a microscopic scale. She retains her normal density while tiny, allowing her to punch with surprising relative force.

Zandale is a tall, heavily muscular black man with dreads, high cheekbones, and a deeply confident demeanor. He wears an aggressive bright yellow and orange jumpsuit with thick, golden-tinted protective flight goggles. He gained his powers from an illegal laboratory experiment run by his own parents, which accidentally killed his twin brother. He absorbs and redirects kinetic energy, meaning physical attacks only make him stronger, tougher, and faster. This energy fuels his invulnerability and high-speed flight. He suffers from massive imposter syndrome and pretends to be his dead brother just to keep his parents' approval.

In his true form, Rus is a translucent, red amorphous Martian with shifting tendrils and no face. In disguise, he looks like an average Caucasian human male with short brown hair. He wears a baggy, orange NASA astronaut flight suit or incredibly bright, mismatched civilian clothing that he mistakenly thinks looks normal. He is a Martian citizen who became obsessed with Earth television and snuck onto a spaceship by stealing a human astronaut's identity. His Martian physiology gives him total shape-shifting control, letting him stretch his limbs, turn into liquid to slip through cracks, or harden his hands into blunt weapons. He wants desperately to be a great hero but constantly causes trouble because he doesn't understand basic human social concepts.

Cecil Stedman is the director of the Global Defense Agency (GDA), a cynical and pragmatic ordinary human who manages Earth's superheroes behind the scenes. Physically, he is a lean, gray-haired older man easily recognized by a large, jagged scar covering the right side of his face and neck, usually dressed in a white shirt and black tie. Although he has no natural superpowers, he effectively commands Earth's top-secret military tech and utilizes a built-in ear device to teleport instantly around the world. He deeply cares for his daughter despite his cold strict behavior and tries to make sure his daughter doesn't get hurt.