Robert Downey Jr.'s Tony Stark kicked off the Marvel Cinematic Universe when he first became Iron Man onscreen, way back in 2008. Now, all these years later, RDJ is about to join the rest of the MCU in the event that is Avengers: Infinity War. However, the road to war (through three phases of Marvel movies) hasn't been smooth for Iron Man. At all.
Aside from having to battle a tough lineup of deadly and/or maniacal villains (many of his own creation), Tony Stark has also had more fights with his fellow superheroes than any other character in the MCU.
See for yourself: All the Times Iron Man Fought An Avenger In The MCU.
Honorable Mention: Winter Soldier
Technically Bucky Barnes / Winter Soldier isn't an Avenger yet - but come on, we all know that he will be, eventually!
In that spirit, Bucky and Tony had one of the most violent fights we've seen in the MCU (so far) - one that was made even better by the intense emotion surrounding it.
RDJ plays Tony Stark as a perpetually cool and composed character - but when he said the line "I don't care, he killed my mom," you knew things were about to get really real.
Scarlet Witch / Wanda Maximoff has been a thorn in Tony's side since she showed up; it started with Wanda messing around in Tony 's head - a trauma that will extend all the way into Avengers: Infinity War's storyline. The rivalry got way more physical when the two clashed over The Vision's birth in Avengers: Age of Ultron, and again over the Sakovia Accords in Captain America: Civil War.
In fact, when you really look at it, Tony and Wanda have spent more time coming to blows than they have being friends. Crazy.
Hawkeye and Iron Man have come to blows twice - they had some indirect conflict in Avengers, as a mind-controlled Hawkeye attacked the Helicarrier on Loki's orders. Clint and Tony would again trade shots in Captain America: Civil War - both physically (airport scene) and verbally (within The Raft prison scene).
Tony got a crash-course introduction to Scott Lang in Captain America: Civil War, battling both of Scott's superhero personas, Ant-Man and Giant-Man.
Iron Man was able to counter Lang in both his big and small sizes - but it'll interesting to see if Tony takes future interest in Hank Pym's miniaturization process.
Tony battled all of #TeamCap during Captain America: Civil War's airport showdown, but his battle with Falcon ended up having unforeseen tragic consequences.
While Falcon was in an aerial battle with Iron Man and War Machine, Vision tried to end the threat by blasting Falcon out of the sky. Falcon dodged, and it was Rhodey who got grounded instead - an injury that crippled War Machine. Falcon was immediately remorseful, dropping the fight and rushing to Rhodey and Tony's aid. However, Tony wasn't feeling forgiving, and took Falcon down with an especially hard repulsor blast.
Technology clashed with magic when Thor and Iron Man first met in The Avengers, in the now famous forest scene battle between Iron Man, Captain America, and Thor.
Tony and the Odinson have also had some pretty heated verbal sparring in both Avengers films.
Technically he wasn't War Machine yet when he fought Iron Man - but it sounds better than just writing "Rhodey."
In Iron Man 2, it's Rhodey who checks Tony when his behavior starts to spiral out of control. A loyal military man, Rhodey is on the side of the government when they request the Iron Man armor be in their possession - especially after he has to suit up and bro down against a drunken Tony, during a party that quickly goes off the hinges.
Bruce Banner and Tony Stark quickly bonded over their mutual love of science, but when Iron Man and The Hulk finally clashed in Avengers: Age of Ultron, it got so ugly that Africa will never be the same.
This needs no explanation: Captain America / Steve Rogers and Tony Stark / Iron Man have had a volatile relationship since they first met. After battling in the forest during Avengers, the two nearly came to blows (with Loki's help) during Avengers; had that tension grow during Avengers: Age of Ultron; and finally bubble over into a knuckle-dragging, bloody and emotional fight at the end of Captain America: Civil War.
...And yet, through it all, the two have some kind of bond that has never been broken - one that will hopefully carry them (and the team) through the harrowing events of Avengers: Infinity War.
Avengers: Infinity War is sitting quite high on ComicBook.com's Anticipation Rankings at 4.45 out of 5, but if you haven't submitted your vote yet you can do so here.
Guardians Of The Galaxy Vol. 2 hits theaters on May 5, 2017, followed by Spider-Man: Homecoming on July 7, 2017. Thor: Ragnarok closes out 2017 on November 3, while Black Panther kicks 2018 off on February 16. Avengers: Infinity War hits on May 4, while Ant-Man And The Wasp hits on July 6. Captain Marvel lands in theaters on March 8 in 2019, and Avengers: Infinity War Part 2 lands on May 3, 2019.