'Arrow,' ‘The Flash,’ ‘Supergirl,’ And ‘Legends of Tomorrow’ Crossover Spoilers: The Dominators Are Here

The ultimate superhero crossover featuring "Arrow," "The Flash," "Supergirl," and "Legends of Tomorrow" is near, and so are the Dominators. The characters will have to play different roles, but will eventually converge in the "Legends of Tomorrow" for the crossover's big finale.

The Dominators in the DC universe are the alien villains. They are here to invade the earth, and the superheroes must unite in a four-way crossover to stop them.

The alien villains are members of the Dominion, an alien empire. They aim to genetically manipulate and enhance their species to conquer other species and now, that's the human race and the superheroes in the earth.

The four-way crossover includes "The Flash," "Arrow," "Supergirl," and "Legends of Tomorrow." The Flash (Grant Gustin) asks for help from Green Arrow (Stephen Amell) as Central City's attacked by the Dominators, EW reports.

#Deathstroke confirmed to appear in #Arrow 100th episode during crossover with #TheFlash #Supergirl & #LegendsofTomorrow! pic.twitter.com/Ho8RcKCeRz

— Everything Arrow (@EssentialArrow) November 15, 2016

Supergirl (Melissa Benoist) is also called by The Flash and Cisco (Carlos Valdes) to help him save the Central City from the alien invaders. And for the 100th episode of "Arrow," Oliver (Stephen) is set in an alternate reality where she's engaged to Laurel (Katie Cassidy).

Green Arrow notices something wrong with his current reality and allows him to question and, hopefully, escape from it. All the superheroes will eventually converge in "Legends of Tomorrow."

Cinemablend reports that "Legends of Tomorrow" is the best place for all the characters to converge. It could be because the time travelers may have the key to defeating the Dominators.

There is still no news if the fans will see all the superheroes in one episode. However, there is said to be one big epic fight scene that "The Flash," "Arrow," "Supergirl," and "Legends of Tomorrow" will be in a scene all at once. It is definitely something DC comics fans should watch out for.

The four-way crossover will start on Nov. 28 at 8 p.m. with "Supergirl," followed by "The Flash" on Nov. 30 at 9 p.m., "Arrow" on Nov. 30, and will end on "Legends of Tomorrow" on Dec. 1 at 8 p.m.