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
: The story offers tantalizing glimpses into Bart's origin in the 31st century. In more recent stories (2025), The Flash #21
: Believing Kid Flash might be linked to a series of Speed Force murders, Barry chases the bratty teen across the globe. The Button: A Collision of Worlds : The
: Barry Allen and Bruce Wayne team up to investigate a blood-stained smiley face button found in the Batcave.