In this enormous franchise based on the five heroes, countless villains appeared to make an end of the heroes. Little girls and boys everywhere chose which hero they’d be, and together fought the biggest and baddest villains of the franchise. So to make things easier here’s a list of the most feared the Rangers had to face.

Updated on October 12th, 2022 by Patrick Armstrong: The Power Rangers’ illustrious career spans basically every form of entertainment over the decades since their first appearance. Any show with an episodic, monster-of-the-week format is going to rack up many villains over time, and not all of them will be created equal. Even bad villains can be fun, and a character doesn’t need a ton of depth if they’re going to be introduced in the same episode.

Some of the franchise’s evil characters have made a lasting impact, however. Whether it’s great visual design, interesting origins, or fearsome powers, all of these villains have something that makes them stand out among the Power Rangers’ competition.

13 Thrax In Operation Overdrive

Though Thrax may slip under the radar even for devoted Power Rangers fans, he has a few qualities that elevate him above more run-of-the-mill franchise villains. The first and most obvious is his incredible visual design. Simply put, Thrax looks more interesting and threatening than most villains in the franchise. With a headpiece combining bone, metal, and leather, he looks like a fusion of great Diablo villain and renegade superhero.

Thrax also has a better origin story than almost any other villain in the franchise. Rather than appear from more or less nowhere, Thrax has a good reason to show up on a mission to destroy the Power Rangers: he’s the son of Lord Zedd and Rita Repulsa. In Power Rangers, the villains rarely get away with it. At least Thrax puts up a good fight.

12 Emperor Mavro In Super Megaforce

A villain doesn’t necessarily have to be strong to be great. Some villains are master schemers, using their wiles to compensate for their lack of personal strength or impressive armies. A great design, amazing performance, or cool gimmick can be enough to make a weak villain worth watching.

Emperor Mavro’s black and gold visual design makes him an eye-catching baddie, but it’s his power that truly sets him apart. Mavro is so strong that it takes the combined force of multiple Power Ranger teams just to challenge him. Even then, Mavro brushes off most of the Rangers’ attacks as if they were nothing, a testament to the power of one of the Power Rangers’ greatest foes.

11 Ivan Ooze In MMPR: The Movie

Yes, Ivan Ooze looks like a sorcerer who fell into a vat of purple food coloring. His aesthetic may not be for everyone, but Ivan has some fantastic qualities that make him worth paying attention to as a villain. Introduced in Mighty Morphin Power Rangers: The Movie, Ivan benefited from having a larger budget and more development time than many villains in the franchise received.

Ivan Ooze is stronger than most of his competition, something that he quickly demonstrates by using his ooze to turn the population of earth into zombies. Though the Rangersare used to high-stakes conflicts, Ivan’s world-domination scheme goes further, faster than the Rangers are prepared to deal with, giving the heroes a true test of their abilities, friendships, and teamwork.

10 Master Org In Wild Force

Master org was the main villain in the tenth season of the series, Power Rangers Wild Force. He was a constant antagonist through 25 episodes, and the ruler of all Orgs. This villain was in fact, so epic, that creators chose to carry on his legacy through Dr Viktor Adler, who consumed what was left of the Ancient Master Org and turned himself into a powerful villain.

Although both of these Org Leader villains were an awesome part of the series, all must come to an end when the Rangers come along. Neither of the Masters could hold their own against the five protagonists.

9 Koragg In Mystic Force

Koragg, The Knight Wolf is an antagonist in Power Rangers Mystic Force. He was a fearsome warrior, but unlike his allies, he was an honorable fighter, refusing to fight against the defenseless. He was a fan-favorite antagonist because of this sort of relatable trait, and because of the fact that he looked awesome.

He was the most feared antagonist in the season, and despite his honorable ways, he was still loyal to the bad guys and would do anything to prove his worth to The Master. The only one who was more powerful than him in the season was The Master himself.

8 Admiral Malkor In Megaforce

Admiral Malkor was the leader of Warstar, a mighty military organization and main antagonist group of Power Rangers Megaforce, making him the mastermind behind the main antagonist. He was an Insectoid, his looks based on moths. Unlike other villains in the series, Admiral Malkor doesn’t let defeat make him angry, instead, he appreciates a worthy opponent.

When his efforts to bring his armada to Earth actually comes to fruition it’s one of the biggest events in Power Rangers history, bringing together all classic Rangers for the epic battle. While he’s not the most powerful villain, his final efforts are epic and will always be remembered.

7 The Master In Mystic Force

Octomus The Master was the main antagonist of the season Power Rangers Mystic Force. This season was full of formidable villains keeping the Rangers busy every minute. Starting from Koragg as the primary antagonist, there are a lot of surprises in the season, but there is one big bad wolf lurking underneath the surface. Or more of an octopus than a wolf is The Master.

He’s the demonic puppet master who’s behind every villain in the season. Unlike other villains in the show, The Master doesn’t just sit back letting his minions do all the dirty work. He’s in fact trapped and is waiting for his freedom to take over the world once and for all. Once the audience finally sees this monster, it becomes clear that he’s the most frightening villain the creators used so far. He’s a demonic and gigantic octopus creature embodying everything that’s evil. Still, he’s no match for the Rangers.

6 The Psycho Rangers In Space And Lost Galaxy

The Psycho Rangers are the villainous counterparts of the heroes. Their signature colors are black, red, blue, yellow, and pink. They appear in the sixth and seventh seasons of the series, Power Rangers in Space, and Lost Galaxy, but they weren’t the major antagonists or masterminds behind the story. Instead, they were the creations of Astronema.

In Lost Galaxy, they actually came close to defeating the Power Rangers. The Pink Psycho Ranger was the first villain to end a Power Ranger on screen, and despite the resurrection of Kendrix, this scene is one of the most powerful in the franchise, haunting fans to this day.

5 Jarrod And Camille / Dai Shi In Jungle Fury

Jarrod, a plain bully, was possessed by Dai Shi, and his most loyal ally was Camille. Dai Shi is the main antagonist in Power Rangers Jungle Fury. An eight-headed Chinese dragon, who in the large part of the season used the body of Jarrod, and the help of Camille to materialize his plan.

Dai Shi often shows compassion towards Camille, which Camille noticed and begins to have feelings for him. In reality, that compassion stemmed from Jarrod instead of Dai Shi, giving the two hope to survive the main antagonists grasp.

4 Tenaya In RPM

Tenaya is Venjix’s greatest creation. She’s a “Human Infiltration Attack Bot”. She was made to look exactly like a human, but actually, she’s a robot hell-bent on destruction. Later it becomes clear that she’s actually a modified human. Like Astronema, she has secret links to the Power Rangers as well.

Her characters story and development is awesome, and one of the most creative in the show, making her a fan-favorite villain in the franchise. She was modified to have a lot of special skills, and constantly whistles an eerie tune, adding to her colorful character.

3 Rita Repulsa In Mighty Morphin

Rita Repulsa was a humanoid sorceress and the main antagonist in Mighty Morphine Power Rangers but was a pivotal character throughout the series. She was a secondary antagonist in Power Rangers Zeo, a recurring antagonist in Power Rangers In Space, and she was the source of all magic in Power Rangers Mystic Force, making her one of the longest-lasting villains in Power Rangers history.

But despite her long history, she isn’t the most powerful villains in the series. Her creations aren’t very bright and don’t usually come close to actually harming the Rangers. That said, she’s the most creative of the villains in the franchise, a master of disguise, a great schemer, and her magic is legendary.

2 Astronema In Space

Astronema is the main antagonist in Power Rangers in Space. She’s also known as the Princess of Evil and the Sark Princess of Space. She’s one of the most compelling characters to watch, as her backstory and character development have the most depth possibly in the entire franchise. She has mastered magic, has enough fighting skills to take on the Rangers herself, and creates the deadliest monsters in the series.

And above that all, she also has some strong ties to the Rangers themselves. She’s one of the few characters who actually gets a full character arc in the franchise, as the audience gets to know many sides to her, making her a fan-favorite despite her being a villain.

1 Lord Zedd In Mighty Morphin

Lord Zedd was the main antagonist in Mighty Morphin Power Rangers and was the true leader of the Evil Space Aliens. He was a pivotal character in many seasons of the franchise. His monsters were the most powerful in the series, and his plans went way beyond destroying the Rangers. He wanted to make good guys disappear for good.

He was one of the scariest characters in the series, and one of the most awesome villains in the franchise. The biggest baddest wolf, he’s the major villain for the Rangers to beat. He appeared in 4 seasons, reigning over the biggest slice of the franchise. Even those who aren’t fans will know his names, and fans will fear it.

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