Villains
Carrion Bunch – An outlaw gang that reside in the Badlands at the Hexagon.
Tex Hex (voiced by Charlie Adler) – BraveStarr's rival, opponent and counterpart, distinguished by a withered appearance and lavender skin. He is Stampede's junior partner. Tex Hex was originally Tex, a greedy Kerium prospector who briefly co-owned a Kerium mine with Angus. He crashed a Kerium-overloaded ship while heading home from New Texas and was revived and given a host of magical powers by Stampede. Credited, in the feature film, with the discovery of Kerium on New Texas.
Outlaw Skuzz (voiced by Alan Oppenheimer) – Tex's cigar-smoking henchman. A cousin of Deputy Fuzz; apparently the only Prairie Person to practice crime. The moral lesson at the end of one episode had him saying the one bad thing he disliked doing was smoking and warning viewers not to follow his example.
Cactus Head (voiced by Pat Fraley) – A short robot with a cactus-shaped headpiece equipped with two energy cannons. Often seen as the comic relief and used as a spy.
Sand Storm (voiced by Ed Gilbert) – A red Sandsnake-like creature who can exhale giant clouds of sand. His kind are sometimes called "sand walruses" and are native to New Texas. He can also use his sand to put people to sleep or create sand creatures.
Thunder Stick (voiced by Pat Fraley) – A stuttering robot with a directed-energy cannon built into his arm.
Vipra (voiced by Susan Blu) – A Reptilianoid female villain who has the power to hypnotize people. She is the assistant to Tex Hex, but envious of his high rank among the villains.
Stampede (voiced by Alan Oppenheimer) – Chief antagonist and ringleader of the outlaws based at the Hexagon. A monstrous, partly skeletal Broncosaur and apparently the last of his kind. He seldom appears in battle directly, but is usually the source of his subordinates' evil plans. Stampede is the archenemy of BraveStarr's mentor Shaman.
Billy the Droid – A purple robot with the power to shoot energy bolts from his hands and a gripping arm from his chest.
Dealer – A dingo drug dealer who was selling a drug called Spin that later killed a boy named Jay Olman. After his plot was foiled by testimony from Brad, Dealer was arrested by BraveStarr.
"Two Faced" Dingo Dan (voiced by Ed Gilbert) – One of Tex's dingoes with a notionally Australian accent. Dan has the ability to take on a human appearance, but would often forget to change his distinctive "fancy hat". He also leads his own gang of Rustlers and is a member of the Dune Buggy Gang.
Dune Buggy Gang – A gang residing in the Badlands that causes trouble for travelers.
Ryder (voiced by Alan Oppenheimer) – A cyborg human who is the leader of the Dune Buggy Gang.
Slither (voiced by Charlie Adler) – A Reptilianoid.
Hawgtie (voiced by Lou Scheimer) – A humanoid pig dressed in a Union Army uniform. He seemed to be strong, and used bolas to capture or bind his victims.
Jingles Morgan (voiced by Ed Gilbert) – A former teacher of BraveStarr who hated to lose so much that he went rogue after fatally shooting his opponent Imperial Guard Trooper Salaman Bliss for mocking Morgan during a humiliating defeat.
Krang – Humanoid felines with green Japanese armor and German accents; a periodic enemy.
Leaper Riders – A group of dingoes that ride Leapers.
Goldtooth (voiced by Charlie Adler, Lou Scheimer in "Wild Child") – An overweight coyote that usually leads other dingoes in battle.
Barker (voiced by Lou Scheimer) – A little dingo.
Howler (voiced by Lou Scheimer) – Another coyote. He can assume human form.
Moribund (voiced by Ed Gilbert) – An outlaw with a Russian accent who was briefly hired by Stampede to replace Tex Hex. He later escaped prison and returned to New Texas with Dingo Dan to find treasure, but was again defeated by BraveStarr.
Professor Moriarty (voiced by Jonathan Harris) – A criminal mastermind and archenemy of Sherlock Holmes. He constructed a suspended animation chamber which allowed him to survive into the 23rd century, where he plotted world conquest.
Rustlers – An outlaw gang led by Dingo Dan.
Weasel (voiced by Charlie Adler) – A dingo.
Mick (voiced by Alan Oppenheimer) – An alien.
Buster (voiced by Pat Fraley) – A robot.
Queen Singlish (voiced by Susan Blu) – A woman that commandeered an entire island, which floats through space. She constantly wants slaves to assist her, but is defeated by the Prairie People.
Slug Moody (voiced by Alan Oppenheimer) – A Rigellian outlaw who seeks revenge on two aliens for sending him to prison.
Thoren (voiced by Alan Oppenheimer) – An alien slaver dressed like a sultan who employs Tex Hex to bring him slaves and betrays him.
Two-Face (voiced by Charlie Adler and Alan Oppenheimer) – A cyborg Avianoid with a normal head and a cyborg head.
Brian (voiced by Pat Fraley) – One of Fort Kerium local school kids nicknamed "Gappie" who is friends with Judy and Clorg and who regularly teases new students such as Wild Child.
Craver – (voiced by Charlie Adler) – A mutant dingo with the power to fly, he used Grumble to rob miners. He was captured by BraveStarr after Grumble finally realized his "friend" was using him.
Grumble – (voiced by Lou Scheimer) – A slow-witted but superhumanly strong being who was Craver's partner until a boy they captured called Orville convinced him he was being used by Craver.
Bart (voiced by Alan Oppenheimer) – A former outlaw who robbed Stratostages with his younger brother Billy. He grew tired of being a criminal and tried to convince Billy to change his ways, but eventually turned him in to BraveStarr.
Billy (voiced by Charlie Adler) – The leader of an outlaw gang that included his older brother Bart and some dingoes. He robbed several Stratostages along with them and later stole a medicine as ransom, but BraveStarr recovered it and arrested him with help from Bart.
