The Marvel Cinematic Universe has been making a splash thanks to Disney+ service and the slew of shows Marvel has released. One of the shows that really created a buzz was the Hawkeye series that hit Disney+ in November 2021.

Jeremy Renner reprised his role as Clint Barton alongside Hailee Steinfeld as Kate Bishop in Hawkeye, which introduced a couple of familiar villains from the comics. However, a number of his best villains have yet to make their live-action debut.

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Updated on April 26, 2022 by Scoot Allan: The success of the solo Hawkeye series in the MCU has fans hoping for a second season. While a second season has yet to be announced, there are a number of Hawkeye's most dangerous villains who could still be adapted to live-action. Characters who tie into Clint Barton's largely unexplored origins could help MCU to further explore the character and appease fans who are hoping to see more of Hawkeye's rogues' gallery on the screen.

15 Oddball Was A Juggling-Themed Member Of The Death-Throws

Oddball from Marvel Comics

Elton Healey joined his brother Alvin as a street performer, working and mastering the art of juggling. He also became well versed in the art of street fighting, which he used in combination with his juggling skills to become the villain Oddball.

Elton joined another juggling-based villain known as Bombshell and lured Hawkeye and Mockingbird into a fight, capturing them for the villain Crossfire. However, Hawkeye escaped and subdued all three villains. Oddball also joined a group called the Death-Throws alongside his brother Alvin/Tenpin and other villains who were good at throwing things.

14 Bombshell Juggled Explosives And Frequently Worked Alongside Crossfire

Bombshell throwing an explosive

Wendy Conrad of Scarsdale, New York is a master juggler and an expert in explosives — skills she used to become Bombshell. Conrad joined Oddball when they were hired by Crossfire to eliminate Hawkeye and Mockingbird. After she and the other villains were defeated, they escaped thanks to Oddball’s brother Tenpin.

Conrad formed the supervillain group known as the Death-Throws with Oddball, Tenpin, Ringleader, and Knickknack. Together they worked to break Crossfire out of jail, but when he couldn’t pay, they held him hostage. However, the group was soon defeated by Hawkeye, Captain America and Mockingbird.

13 Ringmaster Is The Hypnotic Leader Of A Powerful Group Known As The Circus of Crime

Ringmaster and the Circus of Crime from Marvel Comics

One of the more prolific villains Hawkeye has faced is the Ringleader and his Circus of Crime. Ironically, there have been several groups over the years who've used this title, including two in the Old West and one group working as spies for the Nazis during WWII.

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However, the modern-day group was led by Ringmaster, who used his hypnotic skills to control others and pull off robberies in the towns his circus visited. Ringmaster attempted to recruit Hawkeye, Quicksilver, and Scarlet Witch into the Circus of Crime, but failed and became one of Hawkeye’s enemies.

12 Johnny Horton Was A Criminal Who Was Transformed Into The Bestial Griffin

The Griffin from Marvel Comics

Having faced not only Hawkeye, but most of Marvel's heroes at one point or another, Griffin is a unique villain. Originally born John “Johnny” Horton, he was once a low-level gang member in New Orleans who wanted to move up in the world. He decided to follow a Chicago gangster who led him to the Secret Empire.

He was experimented on and had various animal parts grafted into him, making him resemble a Griffin. Johnny became a supervillain, going up originally against Beast and Angel of the X-Men before evolving to fight the members of the West Coast Avengers and others, including Hawkeye.

11 Whirlwind Is A Powerful Mutant Who Can Rotate His Body At Superhuman Speeds

Whirlwind from Marvel Comics

Whirlwind started out as a villain to Ant-Man and the Wasp before evolving into a full-blown Avengers villain. When David Cannon discovered his mutant ability to move at superhuman speeds, he adopted the name Human Top and became a jewel thief.

Later, he rebranded himself as Whirlwind and adopted the identity of Charles Matthews, a chauffeur of Janet Van Dyne (the Wasp). He then joined the second Masters of Evil, leading to his continuing conflict with Hawkeye and the rest of the Avengers throughout the years.

10 Hangman Had An Indestructible Rope And Worked With Teams Like The Night Shift And Lethal Legion

Hangman fighting Hawkeye and Mockingbird split image

Hawkeye has had many dealings with magic and the occult during his time with the West Coast Avengers. Jason Roland was a struggling actor who decided to make a deal with the demon Satannish in an effort to boost his career. Instead, Roland was turned into the monster known as the Hangman.

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Frequently fighting the West Coast Avengers, Hangman has enhanced strength and durability — going toe-to-toe with Wonder Man himself. Hangman also has a magical rope which is indestructible, and can be used for climbing even when it’s not attached to anything. Hangman first worked with Night Shift before forming his own Lethal Legion for Satannish.

9 Swordsman Became A Villain Before He Reformed And Joined The Avengers

Swordsman from Marvel Comics

Jacques Duquesne was a villain named Swordsman who eventually reformed and earned his spot on the Avengers. Originally a privileged youth in Southeast Asia under French rule, he went on to lead a rebellion to free the people of French rule using the Swordsman identity, but he became disillusioned with heroics after learning the rebel leader had ended his father’s life.

Years later he took in and trained Hawkeye, teaching him to use blades while another circus performer taught him archery. When Hawkeye discovered Swordsman stealing, Hawkeye tried turning him over to the police. Clint was badly beaten by Swordsman, setting up their long rivalry before he reformed. A loose adaptation of Swordsman appeared on Hawkeye as Kate Bishop's stepfather.

8 The Hood And His Army Launched A War Against Hawkeye And Ronin

The Hood using his magical abilities

While Hawkeye first had dealings with Parker Robbins/The Hood and his criminal army when they faced off with the Avengers, Hawkeye: Freefall established a more personal rivalry between the two characters. Robbins gained demonic powers thanks to the magic hood he wore, which he used to organize Marvel's C-list villains and make them a legitimate threat.

Hawkeye used his Ronin identity to target The Hood and his army, which launched a war on the streets of New York. However, the demon that powered Robbins stripped him of his abilities and Hawkeye was able to take him down.

7 Madame Masque Became An Enemy Of Kate Bishop's When She Moved To LA

Madame Masque shooting her guns

Kate Bishop and Madame Masque's rivalry first began when Clint Barton had been captured by the villain while attempting to clear his name of a murder. Bishop saved her mentor, which caused Madame Masque to keep an eye on the young costumed crime-fighter.

Madame Masque and Kate Bishop had quite a few encounters when the Young Avenger moved to Los Angeles. Comic readers know Madame Masque is a ruthless and highly-trained criminal who excels at manipulating others to do her dirty work, although Kate Bishop never quite fell for her tricks.

6 Crossfire Is A Marksman With Cybernetic Implants Who Organized The Death-Throws

Crossfire aiming his sniper rifle

Hawkeye’s greatest villain and a villain who has a lot of connections to the Marvel Universe has to be William Cross, aka Crossfire. The cousin of Ant-Man villain Darren Cross, Crossfire has cybernetic implants and worked to turn the superhero community against each other in an effort to end the rise of superheroes overall.

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Crossfire has gone up against not only Hawkeye but Moon Knight, Union Jack, and other heroes in his exploits as a mercenary. With a connection to Hawkeye, Moon Knight, and Darren Cross (Yellowjacket in the MCU), it seems likely this villain has a place in the growing world of Marvel moving forward.

5 The Clown Was A Traumatized And Murderous Mercenary Who Was Sent After Hawkeye

Kazimierczak the clown from hawkeye comics.

Hawkeye first encountered the hired killer known as the Clown after he'd been targeted by crime bosses like The Owl and organizations like the Tracksuit Mafia. Kazimierz Kazimierczak's parents were in the circus when they were killed during his youth and he moved to the States.

However, another traumatic experience cost him his only friend and put him on the murderous path towards becoming the Clown. He enjoyed killing people and would've taken out even more of Clint's neighbors if Hawkeye hadn't stopped him.

4 Clint's Brother Barney Became The Second Trickshot To Challenge Hawkeye

Barney Barton as Trickshot

One of Hawkeye’s greatest rivals was Trickshot, who was originally Buck Chisholm. He was Clint’s mentor who trained him in archery, although he became Clint's rival after Hawkeye chose his brother Barney over him. However, the second Trickshot turned out to be none other than Clint's brother, who'd passed away years earlier only to be revived by Baron Zemo.

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After Zemo had the original Trickshot train Barney, he challenged his brother and became his rival. While Barney donated bone marrow to cure Clint of his blindness, he revealed he only did this to get a fair fight in the future. Trickshot later joined the second team of Dark Avengers under the control of Norman Osborn. Barney and Clint eventually reconciled after he had retired.

3 Baron Helmut Zemo Swore Vengeance On Hawkeye After He Stole The Thunderbolts Team

Baron Zemo from Marvel Comics

The son of the original Baron Zemo, Helmut believed in his father’s teachings of the “Master Race.” Zemo became enraged after Steve Rogers returned, as the hero had horrifically scarred his father. When Heinrich passed away, Helmut used his family’s wealth and his scientific knowledge to become the new Baron Zemo.

He first went by the moniker Phoenix and captured Captain America in an effort to get revenge for his father. He was presumed to be deceased after he fell into a vat, but it merely melted his face in a similar accident that scarred his father. Zemo's Thunderbolts were a team of villains turned heroes who betrayed him and followed Hawkeye, who earned Zemo's his eternal ire.

2 Taskmaster And Hawkeye Have Established A Long Rivalry Over The Years

Taskmaster from Marvel Comics

Tony Masters is the mercenary known as Taskmaster and made his first appearance in the pages of Avengers when he took on Hawkeye and his team. Taskmaster has a photoreflexive memory that allows him to replicate any move, fighting style, or skill he sees — allowing him to steal techniques from heroes like Captain America and Hawkeye.

A formidable opponent, he's frequently challenged Hawkeye both in fighting skills and marksmanship. Hawkeye has won a few battles against Taskmaster, but the mercenary has won a few of his own. Taskmaster is one of many Marvel villains the MCU changed when adapting characters for the big screen.

1 Bullseye Once Masqueraded As Hawkeye On Norman Osborn's Dark Avengers

Marvel Comics' Bullseye about to throw a knife

While Hawkeye is known as one of the Avengers greatest marksmen, he has a villainous counterpart who's equally good at hitting his mark. Bullseye is a highly-effective assassin who usually works for Kingpin and is better known as Daredevil's arch-enemy. His numerous heinous acts make Bullseye Marvel's deadliest villain.

However, he also briefly worked for Norman Osborn during the Dark Reign era. Bullseye was chosen to disguise himself as Hawkeye on Osborn's Dark Avengers, which made Clint Barton even more of an enemy. Bullseye tarnished Hawkeye's costumed identity, creating a lasting hatred between the two.