Planarian Man is a half human/half planarian person who spends his time fighting crime. He was created when a young boy accidentaly cut off the end of his finger while cutting up planaria in a biology experiment. In a freak chain of events, a previously-cut planarian attached itself to the exposed area of the finger (the source of this planarian's extraordinary ability would be explained much later), permanently attaching itself. Over the years, his body slowly, yet steadily, changed into a complex mixture of a human and a planarian. Planarian Man went on to fight the good fight against crime and evil and whatnot, leading his band of planarian clones (and a benevolent midget; see "The Russian Midget" below) against evil clones (no malicious midgets).

The Mad Dr. Planarian is Planarian Man's arch enemy. He was the first clone made of Planarian Man and took with him what Freud might call Planarian Man's "id," but what non-Freudians would call "the bad stuff in his head." Planarian Man's insanity had been revealed as the personality of the Mad Dr. Planarian growing inside Planarian Man's head, just waiting to get out. When he did get out, he began a streak of terror that was so devastating Planarian Man nearly died stopping it. The Mad Dr. Planarian has since become the classic super villain, staying in hiding until he has a new sinister plan to unleash.

The Masked Planarian was the second clone of Planarian Man, created during Planarian Man's first year as a superhero. He has three origins, one from the Planarian Man comic another from Planarian Man: The Movie, and the one that I tell people at parties when I am trying to get them to stop talking to me. The comic version is generally accepted as the "official" origin. Like the Mad Dr. Planarian, he demonstrated the planarian's ability to store memories chemically when he discovered the location of Planarian Man's secret headquarters immediately after being "born." Each planarian person has the memories of its parent planarian up until the point of creation. This can be both an asset and a liability, depending on the personality of the new clone.

The Human Planarian was the third clone and the second "good guy" to come from Planarian Man. He was found by elderly superhero Granddaddy Longlegs and became his pupil. He learned the art of disguise, how to handle himself on the streets of the city, and how old guys pick up young girls. Granddaddy Longlegs took him under his wing, and he decided to carry on the tradition. Instead of a human dressing up like a spider like Granddaddy Longlegs did, he decided to be a planarian dressing up like a human, thus the Human Planarian was born. He currently operates a taxi service, enabling him to keep tabs on crime through his network of drivers and their access to "small talk."

The Smart Planarian was one of the latest clones to be spawned from Planarian Man. He not only has the incredible physical strength and agility of a planarian person, but he also has an unmatched intellect. He has helped the Planarian Patrol battle Blueface the Pirate Planarian and designed and built the Petri Dish 2000.

The Russian Midget is the only non-planarian person to ever be on the Planarian Patrol. Planarian Man and the Russian Midget first met at a birthday part for the 'Midget's cousin, the Zygodactyl Zany, a superhero Planarian Man worked with in the early days. The Russian Midget's most recent task was to head the Planarian Patrol International, although after the break up of the Planarian Patrol, he is most often found selling used cars. Prior to his used-car sales, he was a professional wrestler that operated a wrestling school.

Estro Jenn, along with the Zygodactyl Zany, was a member of Planarian Man's first team of superheroes. She helped defeat the Savage Planarian with her estrogen darts. After the battle, she returned to graduate school, where she continues her search for a cure for tomboyism.

The Quagga was Planarian Man's first ally. He was killed by Planarian Man's alter-ego, which later became known as The Mad Dr. Planarian. He was later resurrected and possessed by the spirit of the Quagga, and is now a supernatural creature that is less like a man in a donkey suit and more like a ghost...in a donkey suit.

The Bavarian Planarian was one of the Planarian Patrol Reserves rounded up by the Russian Midget in the battle with Blueface the Pirate Planarian. He was a key figure in "The Power of Uranus," helping defeat Blueface by allying himself with Uranus Boy. The Bavarian Planarian is a cook by nature, and uses his skills to bake deadly do-gooding doughnuts which explode, release concussive gases and more! After the break up of the Planarian Patrol, the Bavarian Planarian took up the chores of running Uranus Boy Land while Uranus Boy took a vacation.

The Mysterious Cloaked Planarian Without a Name That Can Do Weird Things, or Bob for short, had a very brief but important career as a member of the Other Planarian Patrol. A victim of "The Death of Planarian Man," Bob still remains as one of the most popular Planarian characters despite his relatively non-existant span. Rumors surface now and then that a man like Bob could not die so easily...

Sergeant Planarian was initially a member of the Other Planarian Patrol under Jeff and moved on to become a founding member of Planarian Patrol: West Coast. His gruff nature hasn't earned him friends, but it gets the job done. Most of the time.

Uranus Man is an alien coincidentally enough from the planet Uranus. He lived in secrecy amongst earthlings for several decades before his supply of Uranoid (a chemical which allowed his body to become acclamated to our atmosphere and society by virtually making him human) became depleted. He recently returned to his home planet after aiding the Planarian Patrol in "The Power of Uranus."

Uranus Boy is the son of Uranus Man and an earth woman. His actual name is "Snert the Alien from Uranus II" or "Stafu 2" for short. He is the owner and manager of Uranus Boy Land, but after the events of "The Power of Uranus" he has left the park under temporary control of the Bavarian Planarian.

The Wise Old Planarian Who Lives on Top of a Mountain has no real significance as far as most readers know. All he visibly does is open and close the Planarian Patrol stories. But considering Planarian Man was the first planarian person and that the Wise Old Planarian That Lives On Top of a Mountain is elderly, you know that there has to be more to the story than meets the eye...

The Ninja Planarian has an army of ninja soldiers that is second to none, and his intellect is exceeded only by the Mad Dr. Planarian when it comes to evilness. Although he was killed by The Mad Dr. Planarian, due to the revelations at the end of "The Death of Planarian Man," one can easily deduce that he is still alive somewhere...

Blueface the Pirate Planarian was the official Bad Guy of "The Power of Uranus," and he earned the title. Born in Uranus Boy Land due to poor sanitation practices, he attacked the outside world under the misconception that he was a pirate. Blueface's actions would come to affect the Planarian Patrol in a way that no villain has ever done before.

The Planarian Patrol After a battle with Planarian Man aboard his space ship, the Mad Dr. Planarian's escape pod was launched into the darkness, assumed to be gone forever. By that time of peace, there was a total of five planarian people still on earth. They were Planarian Man, the Masked Planarian, the Human Planarian, the Lunar Planarian, and the Hydro Planarian. The Hydro Planarian had his headquarters in the bottom of the Atlantic Ocean, the Lunar Planarian was stationed on the moon, the Human Planarian and the Masked Planarian both operated in the city, and Planarian Man was still using his original headquarters in the forest. They would all fight evil independently and help each other out when needed. One day a meteorite struck earth. It had landed very close to the Hydro Planarian's base. He went to examine it and found it to be the Mad Dr. Planarian's escape pod. There was no sign of the evil scientist anywhere near it, though. He reported his findings to the other planarian people and soon after, the Mad Dr. Planarian resurfaced. They realized that a threat like this could only be successfully met with a team effort, resulting in the birth of the Planarian Patrol. Other members: Aerial Planarian, Marshal Planarian, Boris the Unrealisically Muscular Planarian (B.U.M.P.), and the Patriotic Planarian.

The Other Planarian Patrol was formed by Jeff, an amnesic planarian, to defeat the brainwashed Planarian Patrol in the infamous "The Death of Planarian Man" storyline (Planarian Patrol #1). It was the first appearance of aforementioned characters Aerial Planarian, Marhsal Planarian, Sergeant Planarian, B.U.M.P., and the Patriotic Planarian and also The Mysterious Nameless Planarian Who Can Do Weird Things, or Bob for short. The Other Planarian Patrol was dissolved after its purpose had been served.

Planarian Patrol:West Coast was introduced in the conclusion of "The Death of Planarian Man." It consists of Marshal Planarian, Sergeant Planarian, and the Patriotic Planarian.

Planarian Patrol:International was created at the same time. Its members include the Russian Midget, B.U.M.P., and the Aerial Planarian.