: This issue is widely praised for the dynamic, kinetic artwork of Francis Manapul, who used massive splash pages to capture the feeling of super-speed. The Modern "Army of Flashes"
In more recent stories (2025), The Flash #21 has explored even weirder cosmic horror.
In the world of DC Comics, "The Flash #21" has been the title of several major turning points across different eras. Whether you’re looking at the iconic "The Button" crossover or the first meeting between two generations of speedsters, these issues are legendary for redefining what it means to be the Fastest Man Alive. The Button: A Collision of Worlds Flash 21
One of the most famous versions of The Flash #21 was published in 2017 as the second part of " The Button ". This storyline directly connected the world of the Flash to the mysterious Watchmen universe.
In the 2013 New 52 continuity, The Flash #21 gave fans a long-awaited "race of the century" between Barry Allen and the impulsive teenager Bart Allen, also known as Kid Flash. : This issue is widely praised for the
: In this timeline, Wally West has become a "war general," sending speedster copies of himself on suicide missions to defeat the villain Eclipso.
: Believing Kid Flash might be linked to a series of Speed Force murders, Barry chases the bratty teen across the globe. Whether you’re looking at the iconic "The Button"
: The issue focuses on the tension between Barry Allen, who believes speedsters shouldn't be soldiers, and a version of Wally that has been pushed to the edge. ⚡ Key Takeaways for Collectors The Flash #21 review - Too Dangerous For a Girl 2