Nestled in the complicated narrative of The Flash is the mysterious and tragic murder of Barry Allen's mother, Nora, which is an event that kicks off a chain reaction that eventually takes Barry through becoming a forensic scientist to try and acquit his dad of his mother's murder and becoming The Flash.
Nora's life was brutally cut short and the identity of the murderer, a mystery at the heart of The Flash, is never shown in the film, which creates a void waiting to be filled.
However, director Andy Muschietti, in an interview with The Playlist, confirmed that the Reverse-Flash, Eobard Thawne, was the one responsible for Nora's death and would've been revealed had The Flash 2 been greenlit.
The inclusion of the Reverse-Flash in the sequel makes sense when you consider the source material. Thawne's character is crucial in The Flashpoint storyline, which serves as the inspiration for the events of The Flash.
In the comic books, Thawne kills Nora in cold blood, leading to the alternate reality formed by a heartbroken Barry whose attempts to save her literally formed the basis of an entire comic book storyline that's been revisited several times over the years. But, at the same time, Thawne also embodies a captivating complexity, the type that makes a villain fascinating. He's an adversary whose hatred for the Flash drives him to unimaginable lengths to destroy everything the Flash stands for. A time traveler from the 25th Century, Thawne's obsession with annihilating the Flash's legacy is compelling, casting him as a formidable opponent.
