Ronin, a masked vigilante who tracks down and slaughters criminals, is the alias Hawkeye uses in Avengers: Endgame after he loses his family in Thanos' universe-altering snap. The film never actually outright refers to
Hawkeye and Echo's Ronin
Echo debuted as Ronin in New Avengers #11, published in 2005. She assumed the identity after feeling unworthy of joining the New Avengers because of her criminal past. She chose Ronin because it means "Masterless Samurai" in Japanese.
Clint Barton became Ronin not long after Echo gave up the identity, choosing to take on the Ronin guise to reflect his trauma and disillusionment as an Avenger.
Clint Barton Was Ronin in “Avengers: Endgame”
What fans may not know is that Hawkeye's little ninja sequence in “Avengers: Endgame” is a nod to a comics run that saw his character take on the alter ego of Ronin, and in “Hawkeye” it's revealed that his time fighting criminals as Ronin has made some very serious enemies.
The word rōnin literally means 'wanderer'. It is an idiomatic expression for 'vagrant' or 'wandering man', someone who finds the way without belonging to one place. The term originated in the Nara and Heian periods, when it referred to a serf who had fled or deserted his master's land.
After Clint got in the way of the Tracksuit Mafia's nefarious plans, the gang hired a mercenary who went by the name "The Clown" (Hint: it's Kazi from the show). The Clown was instructed to kill Clint and almost did. After cornering him, The Clown stuck arrows in both of Clint's ears, deafening him.
Ronin, a masked vigilante who tracks down and slaughters criminals, is the alias Hawkeye uses in Avengers: Endgame after he loses his family in Thanos' universe-altering snap. The film never actually outright refers to Barton as “Ronin”, but he wears the character's outfit and mask in the movie.
One is a character who is literally named Ronan and the other is a mantle used by various characters often when attempting to withhold their true identity. As the above highlights, there's numerous characters who share a codename and I don't know how many more I've skipped over.
He yearns to be a real superhero like Hawkeye, but believes LARPing is the closest he will ever come to achieving this dream. Grills is also a firefighter, demonstrating courageousness and a desire to help others. He resorted to stealing the Ronin Suit while on firefighter duty for his LARPing hobby.
While spelled slightly different, the character's origins are quite different as well, as Ronan is an alien fanatic of the Kree Empire, whereas Ronin is an Earth-based cover identity.
The Ultimate version of Ronan the Accuser is the son of Thanos, and is a part of his empire. He is ultimately defeated by the Thing.
Ronan the Accuser is a villain-turned-anti-hero from Marvel Comics and the on and off antagonist of the Guardians of the Galaxy team as well as an enemy of various superheroes in the Marvel universe, including the Fantastic Four, Inhumans, Avengers, and Captain Marvel.
Throughout the first three episodes, however, we learn that Laura not only knows about the Ronin suit but that she's also familiar with the Tracksuit Mafia.
Ronin's Campaign
In 2018, following the Snap, Clint Barton acquired the Ronin suit and sword in order to disguise himself as he traveled the world in search of criminals. For five years, Barton wore the suit and massacred any criminals that had survived the Snap as he deemed them unworthy.
He was trained in various forms of martial arts by Captain America who was known to be one of the world's greatest hand-to-hand combatant. On his first mission with Luke Cage's band of renegade New Avengers, as Ronin he proved to have come a long way from his old days of rarely ever using his martial arts skills.
Throughout various points in his Marvel Comic history, Clint Barton has either had partial hearing loss, lost around 80% of his hearing, or lost his hearing entirely. At one point in his comics history, Hawkeye was 80% deaf in the aftermath of a big battle.
The main reasons heroes tend to wear the Ronin costume is to disguise their identity, whether to go undercover (in the case of Echo) or because their secret identity is already public. This suggests to us that the Super Human Registration Act introduced in 2016's Captain America: Civil War is still very much in effect.
Ronin's Retractable Sword is a sword used by Clint Barton during his time as Ronin to assassinate criminals who had survived the Snap. After being used to fight the Outriders during the Battle of Earth, the sword was left in the ruins of the Avengers Compound.
Following being resurrected from death, Clint Barton, the superhero known as Hawkeye, decided to take a break from his superhero identity. In the guise of Ronin, he joined the team The New Avengers while they were locked in conflict with Iron Man's team of Avengers.
Samurai warriors derived their status and salaries from the daimyo lords they served. When a daimyo died, these warriors became "ronin," masterless samurai. After Tokugawa Ieyasu became shogun in 1603, samurai military services were no longer required, and many ronin wandered the country seeking employment.
Since the identity first appeared in Brian Michael Bendis and David Finch's original New Avengers series, Ronin - a name which denotes a masterless samurai - has been used as a force for good and evil. While most famously used by Hawkeye in the MCU, the Ronin identity has been taken up by several heroes and villains.
Among Clint Barton's many heartbreaking actions after losing his family to the Blip was a tenure as masked vigilante Ronin. As Ronin, Clint hunted down criminals and murdered them in the streets, dealing out a cold sense of justice that matched his new cold-hearted demeanor.
Clint abandons his Hawkeye mantle to become Ronin after Thanos' snap in Avengers: Infinity War dusted his entire family. In Avengers: Endgame, Natasha Romanoff finds Clint in Tokyo, taking down Japanese gangsters under the Ronin mantle.
Hawkeye's finale made canon for the MCU something fans have been theorizing about for quite some time: not only is Hawkeye/Clint Barton's (Jeremy Renner) wife Laura Barton (Linda Cardellini) a former S.H.I.E.L.D. agent, she's actually Agent 19, also known as Mockingbird.
A watch that could expose the identity of somebody “out of the game.” Laura gives a heartful, “Thank you,” before turning the Rolex over to reveal a SHIELD logo and the number 19. Even though Laura Barton has been part of the MCU since 2015, we never did know much about her other than being Clint's secret wife.