The series was about a group of lucha libre wrestlers led by Lobo Fuerte who, along with Turbine, Maria Valentine, and Laurent, fought to protect Union City from a slew of different enemies Led by the Whelp and the bumbling antics of Mayor Potts. The series title is translated as "The Wrestlers" or "The Fighters" from Spanish.
Characters
Lobo Fuerte - The greatest masked wrestler in Union City who leads the Los Luchadores into fighting against evil in Union City. His headquarters is in the Wolf's Lair on top of the Lobo Tower.
Turbine - He is one of Lobo Fuerte's sidekicks and rides a motorcycle.
Maria Valentine - She is one of Lobo Fuerte's sidekicks.
Laurent - The Jamaican trainer and tech support of the Los Luchadores.
Villains
The Whelp - Cesar is the pet Chihuahua of Dr. Jacob Mueller. He eventually becomes an evil genius through a freak accident during Los Luchadores' fight with Mueller's former assistant Douglas Slade that resulted in some of Slade's evil being transferred into him. While he wears a metal covering over his left ear and eye, the Whelp wears a special translator collar so that his minions can understand him. In addition, the Whelp rides a robotic suit when fighting Lobo Fuerte.
* Whelpettes - Two females who are servants of the Whelp.
* Bone Warriors - The skull-masked minions of The Whelp.
Other characters
Mayor Potts - The bumbling Mayor of Union City. While he truly meant to do only good for Union City, things just seemed to always take a turn for the worse.
* Gertrude - Mayor Potts' aide.
Episodes
Ay, Chihuahua: Series pilot. Douglas Slade, the former assistant of a scientist named Jacob Mueller, escapes from prison and forces Mueller turns himself into a hybrid monstrosity that involves the injection of cheetah and lizard DNA as a way to make him whole again. After some other injections and becoming Freakshow, he plans to obtain Lobo Fuerte's heart so that he can have a warrior's spirit.
Bad to the Bone: Following Los Luchadores' fight with Freakshow that transferred some of his evil into him, The Whelp makes himself known to Lobo and Turbine when he plans to resurrect a long dead pirate Louie Andre LaFeet who was said to have aligned himself with dark forces.
Confrontation in the Constellation: Lobo is captured by aliens to fight in a wrestling match.
The Pyramid of Doom: The trio must save campers from becoming meals for aliens. They find an ally in a deaf girl that was immune to their sonic device.
Anxiety Attacks:
The Whelp Strikes Back: As Maria goes on a date with Dirk Layden, she learns that he is working for the Whelp who sends a robotic double to infiltrate the Wolf Tower and prepare it for the Whelp's plan to unleash his shrinking cannon.
Lobo Limbo:
The Mask of Diablo Azul: Turbine becomes possessed by an evil mask that was worn by Diablo Azul which compels him to raise the dead.
Here Comes the Sludge: Lobo Fuerte's old friend Dr. Maxine Harris has invented the Ion Particle Stabilizer which would become a destabilizer if it overheats. The invention would help in stabilizing the ozone. Unfortunately, the Ion Particle Stabilizer attracts the attention of the Whelp who uses an invention to switch minds with Lobo Fuerte so that he can use his body to get pass the security system guarding it.
Puppy Love: Union City is opening its water treatment plant. The Whelp has developed a chemical that causes anyone exposed to it into Bone Warriors like how he tested it on tag-team wrestlers Motley and Gnarly as well as the wrestler Hog. With the Whelp's plan to infect the water treatment plant with it, Lobo Fuerte must thwart this plan before Mayor Potts activates the water treatment plant.