Even though Iron Man is usually able to use his superior intellect and impressive gadgets to defeat nearly every threat he encounters, the Avenger would regrettably be utterly destroyed by the Flash, and it would be hilarious.
Doctor Strange is a Master of the Mystic Arts who wields a number of powerful spells and artifacts, making him a dangerous threat. Beating the Flash as simple as Doctor Strange moving the battlefield to another dimension or changing into one of his more powerful forms.
Despite being surrounded by Thor, Iron Man, and Wanda, Black Widow is one of the most valuable members of the Avengers team. In one of the recent Marvel issues, Natasha Romanoff has proved that she can easily beat The Flash from DC.
In a direct physical speed matchup, The Flash will definitely trounce Thor.
Quicksilver, Marvel's Answer to The Flash
The other is in the Marvel Cinematic Universe, Quicksilver is played by Aaron Taylor-Johnson in Avengers: Age of Ultron (2015). Less popular, but probably because this version of Pietro didn't last long. Regardless, there aren't many things this speedster can't do.
Assuming Flash doesn't have previous knowledge of Dr Strange that Dr Strange doesn't also have. If Flash is given the opportunity to ambush, Strange loses immediately. The moment Strange can make an action, though, he'd win.
While it is fairly obvious that the Flash could run circles around Thanos under normal circumstances as his powers make him virtually untouchable, there wouldn't be much the Scarlet Speedster could do if he was around for Thanos' Infinity Snap as there is no way to outrun the god-like power of cosmic chance.
The Flash's Speed Would Overwhelm The Wall-Crawler
The Flash is so fast, he's run through time, vibrated through walls, and can throw a punch with infinite mass behind it. The fight might be close, but Spider-Man would have a difficult time slowing down the Flash enough to beat him.
But for the results on record, Wally is the clear winner. As we can see from the results here, the common folklore compromise that Superman can beat the Flash—any Flash—if he's allowed to fly in the race doesn't actually seem to bear any truth.
End of Story. THE FLASH wins! He's ability to see INFINITE POSSIBILITIES before they happen not to now talk about his Speed Force warning ability of his Opponent gives him the ability to negate all of Wanda's powers.
Nothing Black Panther could do would help him against the Flash. Any attack could be vibrated through and while T'Challa is much smarter than Barry, Barry knows how to use his speed as a weapon in ways that would give Black Panther a run for his money.
4 FLASH WOULD BEAT: Loki
Loki constantly uses his magical background to either aid or ail his brother, more often the former. Loki's cunning mind is one of his most powerful assets, but facing off against someone who is able to move faster than he could think would put him at a disadvantage.
He doesn't need a cosmic treadmill to travel through time like Barry once did, and has even outrun death (in the form of the Black Flash) just like his uncle. In the series Flash Forward, it was determined that Wally West is the fastest being in the whole Multiverse.
The Flash has a 100% chance to defeat Captain Marvel. Captain Marvel on the other hand, does not have a 100% chance to defeat The Flash. YES, that's the ‛‛truth”. - IF The Flash wanted to defeat Captain Marvel and does not want her to dodge his attacks, HE CAN DO IT.
Sonic vs. the Flash: Who Would Win? At their “top” speed, no one really wins or loses. However, canon events give us hints on how fast exactly these two can run and that the Flash just had more edge and broader source material, making him evolve and grow into a better and faster version of himself.
Shazam can fly at the speed of light, which makes him faster than almost any other hero, but both Barry Allen and Wally West are able to move at speeds faster than light, meaning that while they would have to push themselves, at least two Flashes are faster than Shazam.
Flash might be the fastest man alive but he's no match for Goku. But being slower is what will likely save him if they ever met on the battlefield. A fight between DC's Flash and Dragon Ball's Goku would last only a matter of seconds based on their incredible speeds, but the outcome likely wouldn't be what fans expect.
"That's about 2,000 newtons, about 450 lbs of force — so he's hitting him with a force equivalent to 450 lbs. and does it in 1/10th of a second."
The two heroes have raced several times since then, in the comics, cartoons and movies. As a general rule, the comics claim that The Flash is the faster hero, with Barry Allen, Wally West and even an octogenarian Jay Garrick having outrun Superman over the years.
Thor is powerful but he's rarely faced a foe as powerful as the Reverse Flash, one who can hit him a million times before Thor could blink. With powers like his, the Reverse Flash has what it takes to beat Thor.
While Quicksilver is often thought of as the fastest of the Avengers, one hero fans know from the movies can actually outrace him when they need to. Many heroes possess enhanced speed, but Pietro Maximoff is generally considered Earth's fastest man (at least in Marvel Continuity).
Superman is stronger than Thor and would win a fight against him the majority of the time. Superman has physical strength, speed, and durability as his advantage. That isn't to say that it would be an easy fight, Thor still has access to magic, and this is one of the most notable weaknesses of Superman.