15 Lethal Mistakes From Every MCU Supervillain

Even if they're vicious, cunning, and prepared to go to any length, MCU villains always succumb to their respective heroes for a reason. When it comes right down to it, every villain has a fatal fault that leads to their downfall. Because of this shortcoming, they focus on the wrong things at the bad moments, giving the hero the advantage they need to rescue the day.
Although the MCU villains' flaws aren't as evident as the old-school Kryptonite-style cop-outs, they are nevertheless present. In general, the motives of MCU villains are linked to their flaws. Some villains, such as Mysterio, are blinded by their desire for fame, while others, such as Loki, are too insecure to recognize they don't have to live their whole lives in their costumes. Below are the 15 lethal mistakes from every MCU supervillain.

1. Ego The Living Planet Thought His Son Could Be As Self-Centered As He Was

Source: Marvel Studio

Ego was the epitome of the absentee parent, and as a result, he had little knowledge of his kid. Despite his immense strength, this ultimately led to his demise.
Ego's grand scheme was to team up with another Celestial, in this case his son, and utilize their combined strength to duplicate themselves throughout the cosmos. Essentially, transforming all other aspects of existence become instances of Ego. Ego had utterly underestimated Star-humanity, Lord's and hence was unprepared for his son's betrayal.

2. Red Skull Thought He Was Strong Enough To Keep The Cosmic Cube

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Johann Schmidt, AKA the Red Skull, toyed with forces and relics with unimaginable levels of power he couldn't control, just like the legendary cinematic Third Reich zealots who came before him, notably the villains featured in Raiders of the Lost Ark.
Johann Schmidt opted to touch the Tesseract with his own hands after getting it, and the power drew him into a wormhole. Because of Red Skull's mishandling of that cosmic power, he was cursed to serve as the Soul Stone's guardian for the rest of eternity.

3. Ultron Always Wanted A Ideal Body But Ended Up Making The Instrument Of His Ruin

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Tony Stark and Bruce Banner constructed Ultron, a sophisticated artificial intelligence, to aid in the protection of the Earth. Ultron, like any AI, believed that the greatest way to help the human species was to aid in its demise. But first, he'd need a more controllable physique.
Ultron began development on what would later become Vision. Ultron eventually committed the same error as his creator, creating a creature that he couldn't control. Ultron's creation was, by chance, the only creature powerful enough to stop him.

4. Aldrich Killian Made A Power He Couldn't Handle

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Extremis was a volatile technology invented by Maya Hansen and Aldrich Killian. It was so unstable that if something went wrong, the user would explode.
Maya Hansen and Aldrich Killian couldn't solve Extremis' incendiary ingredient, but they felt Stark could. So, to preserve his love, Killian infected Pepper Potts with Extremis in the hopes that Stark would address its faults with it. On the other hand, Pepper was one of the few instances that didn't blow up, and she could utilize her newfound Extremis skills to eliminate Killian.

5. Obadiah Stane Believed A Stronger Suit Couldn't Be Weak

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Obadiah Stane's first problem was that he believed he could operate Stark Industries better than a Stark. After Howard Stark's death, Stane, as Howard's second-in-command, took over as temporary CEO while Tony was still too young to do so. Stane acted as Tony's tutor once he reached adulthood, although he eventually sought to have Tony killed. Stane determined his only option was to reverse engineer an older version of the suit and battle head-to-head with his former protege once Tony made it out alive and developed an Iron Man outfit.

6. Yellowjacket Didn't Trust Hank, And He Wasn't Prepared For The Pym Particles

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Hank Pym, the CEO of Pym Technologies, groomed Darren Cross, AKA Yellowjacket, at first. Pym refused to share his greatest creation with Cross, the Pym Particles, which enabled Pym to reduce the space between molecules. The two had a falling out after Pym refused to share his greatest invention with Cross, the Pym Particles, which allowed Pym to shrink the space between molecules.
Cross decided to tamper with the technology nevertheless and fashioned himself a Yellowjacket outfit. In collaboration with Hank Pym, Scott Lang utilized the Pym Particles to shrink inside the Yellowjacket suit, permanently damaging it. If he had listened to Pym, Cross would still be a billionaire tech CEO today.

7. Ivan Vanko Was Beaten By A Team-Up While He Crossed His Allies

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Because his father was rejected by Howard Stark, Ivan Vanko had a lifetime grudge towards the Stark empire. When Tony was revealed to be Iron Man, Vanko devised his own arc reactor weaponry to combat him. Vanko joined up with Justin Hammer to produce a wave of Hammer drones when his first attack didn't go as planned.
Vanko betrayed Hammer by seizing control of the drones and organizing an assault on Stark during the Stark Expo. Stark defeated Vanko by forming a team with War Machine and crossing their beams to produce a more powerful weapon than they could have created on their own. As a result, Vanko betrayed his buddy and was brought down by Stark and Rhodey's brotherhood.

8. Kaecilius Made A Perilous Arrangement Because He Was Jealous Of The Ancient One's Power

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Doctor Strange was forced to journey to Kamar-Taj after losing the use of his hands. Kaecilius came to Kamar-Taj in search of fresh purpose in his life after the death of his wife and kid. Kaecilius' stakes were obviously far higher, and as a result, he was much more difficult to satisfy. In Kamar-Taj, Kaecilius was dissatisfied with his existence. He felt betrayed after learning that the Ancient One was pulling strength from the Dark Dimension despite her followers' protests.

9. Loki

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Loki may be a brilliant trickster deity, but he'll always feel uneasy in the shadow of his brother. It's difficult to have Thor as a brother, especially as Odin's adopted son, and even more difficult when Odin exhibits evident partiality. Since birth, it has been known who will succeed to the throne.
After his father, Odin, slipped into his Odinsleep, Loki took control for him. Loki was finally discovered to be trying to prove himself to his father by destroying a whole kingdom, Jotunheim. Loki's insecurity grew as a result of his failure, and he teamed up with Thanos to attack Earth.

10. Hela Lacks Preparations

Source: Marvel Studio

Because his father was rejected by Howard Stark, Ivan Vanko had a lifetime grudge towards the Stark empire. When Tony was revealed to be Iron Man, Vanko devised his own arc reactor weaponry to combat him. Vanko joined up with Justin Hammer to produce a wave of Hammer drones when his first attack didn't go as planned.
Vanko betrayed Hammer by seizing control of the drones and organizing an assault on Stark during the Stark Expo. Stark defeated Vanko by forming a team with War Machine and crossing their beams to produce a more powerful weapon than they could have created on their own. As a result, Vanko betrayed his buddy and was brought down by Stark and Rhodey's brotherhood.

11. Malekith's Exceeding Confidence

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Malekith's entire plan was to utilize the Aether to conquer the Nine Realms, to put it frankly. This was something he tried over and over again. Malekith was stopped by Odin's father, Bor, and imprisoned when he initially tried this accomplishment. Malekith may have learnt his lesson there, but as soon as he and the Aether were let back into the world, he sought to put his old plan into motion.

12. Erik Killmonger's Horizon

Source: Marvel Studio

Killmonger demonstrated his worth by beating T'Challa in a combat for the crown of Wakanda.
Killmonger should have gone for the kill much quicker in the rematch. Instead, he misjudged the will of Wakanda's legitimate monarch and lost the duel after allowing it to drag on for far too long. Killmonger let his dagger slip from his grip too many times through different acrobatic flips, the latest of which led to Black Panther snagging it and shoving it into Killmonger's side.

13. Mysterio ConcentratedMore On Making Himself Look Like A Hero Than Making His Dellusions Secure

Source: Marvel Studio

Quentin Beck, a.k.a. Mysterio, was a reviled villain. He became a villain as a result of a lack of recognition and respect from Tony Stark, and obtaining that credit from the general public became an obsession for him.
Rather than plotting an assault on the globe, a city, or a bank, like a typical villain would Beck staged attacks that he later prevented as the fictitious superhero, Mysterio. It was an odd concept with a lot of moving pieces that appeared guaranteed to fail, yet it really worked at first. But, in the end, a phony hero like Beck was no match for a true hero like Spider-Man, and Spidey was able to get beyond Beck's deceptions thanks to his Peter-Tingle.

14. The Vulture

Source: Marvel Studio

The Vulture was a wise and competent man, but perhaps not wise and capable enough to take on Tony Stark (or Spider-themed followers of Stark). There's a significant difference between possessing power and swiping technology to gain power.
Vulture's main issue was underestimating Spider-powers, Man's especially after learning that he was a high school student. Vulture believed he had dealt with Spider-Man and proceeded with his heist aboard one of Stark's planes. He hadn't expected Spider-Man to return, and he hadn't expected Spidey to be a match for him in a battle.

15. Alexander Goodwin Pierce

Source: Marvel Studio

Alexander Goodwin Pierce was a member of the World Security Council and a member of S.H.I.E.L.D. However, he was covertly collaborating with Hydra to take control of the whole planet.
Pierce's scheme worked well until Fury, Captain America, and Black Widow exposed him as a double agent. Pierce and his Hydra agents' strategy went awry when they were no longer able to work in the shadows. They were quickly hauled down after losing all leverage. However, it did lead to the cancellation of S.H.I.E.L.D.