‘The Flash’ Season 3 Spoilers, News & Updates: The Flash's Greatest Enemy Revealed! More Information On Crossover With 'Supergirl,' 'Arrow' & 'Legends Of Tomorrow'

During the episodes of “The Flash” Barry Allen (Grant Gustin) had defeated many crooks and villains. He has found gangsters, speedsters and even 30 feet tall monsters, but who is his biggest enemy in Season 3 and how will things change for the character?

According to IO9, the biggest enemy that Barry will face during Season 3 will not be Doctor Alchemy (Tobin Bell) or Savitar (Andre Tricoteux), but Barry Allen himself. After all, Barry is the one who used his powers to change the past. It is true that all he wanted to do was bring his parent back, but it had terrible consequences and even though he tried to fix his mistake, there are a series of irreversible changes done to the world.

Caitlin Snow (Danielle Panabaker) delivered the harsh truth to him. She lives in constant fear of slipping into Killer Frost, the brother of Cisco Ramon (Carlos Valdes) is gone and everyone lives far more miserable lives just because of his selfishness. It is not sure if the writers will go on working in the same direction, but it will be nice to see Barry take responsibilities for his misdoings.

The first  of series of crossovers begins with “Supergirl”. Comic Book reports that the newest episode about Superman’s younger cousin will feature a guest star appearance by Grant Gustin. The newest episode of “Supergirl” named “Medusa” will be the first in a series of episodes named “Heroes vs Aliens” and will concentrate on connecting the universes of “Supergirl”, “The Flash”, “Arrow” and “Legends of Tomorrow”. They will band together to push away an invasion of alien parasites who try to take over the planet.

Digital Spy shares some bonus information on the upcoming episodes of “Heroes vs Aliens”. Creators of the series are trying to create a full-on crossover experience, using 1980’s comic book series known as “Invasion” as a basis to the story. Producer Marc Guggenheim claims that they are using newest prosthetics and cutting edge visual technology to be able to bring about the feeling of the books onto the small screen.

“The Flash” Season 3 Episode 8 “Invasion” will launch on 29 November on CW.