Now that the five-part TV miniseries event on the CW Network has passed, let's look back at the top ten hidden connections to the original Crisis on Infinite Earths comics that eager viewers probably might have missed. In the early '80s, the comic book industry was ultimately changed forever by writer Marv Wolfman and artist George Perez. As the popular twelve-issue event took place from April 1985 to March 1986, the Anti-Monitor attempted to annihilate the entire multiverse by destroying as many Earths as possible. The DC Comics superheroes united to stand against a common enemy but sacrifices had to be made.

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In the sixth annual Arrowverse event, Supergirl (Melissa Benoist), Batwoman (Ruby Rose), The Flash (Grant Gustin), The Green Arrow (Stephen Amell), Superman (Tyler Hoechlin), and The Atom (Brandon Routh) found themselves picked by The Monitor (LaMonica Garrett) to save the multiverse. A deadly wave of anti-matter has been spreading and destroying universes in its destructive path. Even though the Green Arrow expected to sacrifice himself to save his friends, he never realized death was just part of his destiny. No matter how many superheroes are put together, it's not enough to stop the Anti-Monitor.

10 10. The Towers

In the comics, The Monitor was providing the DC Comics super-villains with their own technology. He was secretly testing the heroes and villains to find out who was strong enough to help him in his true mission against the Anti-Monitor.

During the crisis, The Monitor had set up giant tower-like devices across space and time to help his team. In the first installment, the Flash and the others are trying to protect the giant tower from the shadow demons. The tower is the only thing slowing down the anti-matter wave from destroying Supergirl's Earth.

9 9. Anti-Monitor's Origin

In the comics, Pariah was a brilliant scientist conducting his own lab experiment. Pariah wanted to discover how the creation of the universe came about. This experiment led to the awakening of the Anti-Monitor, who had been unconscious for more than a billion years.

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In the fourth installment, which was the Arrow episode written by Marv Wolfman, the Monitor was a proud scientist named Mar Novu who experimented on himself. After entering through a portal, Mar discovered the anti-matter universe and was suddenly confronted by the Anti-Monitor.

8 8. Alexander Luthor Jr.

From Earth-3, Alexander Luthor Jr. is the son of Lex Luthor and Lois Lane. During the anti-matter wave, Lois and Lex sent their infant son to Earth-1 in order to save him from death. Harbinger, the Monitor's assistant, whisks away Alexander during the anti-matter wave, which causes him to have superpowers.

During the crossover event, Lex Luthor (Jon Cryer) uses the Book of Destiny to grant himself powers and reluctantly becomes a hero in his own right. Superman and Lois place their own son in a space pod to escape the incoming anti-matter wave.

7 7. Harbinger

Harbinger Crisis

In the comics, the Monitor ordered Harbinger to track down the best heroes and villains to help him fight the Anti-Monitor. When the Harbinger was under attack by the shadow demons, her mind was suddenly corrupted. Harbinger's new orders were to attack and kill the Monitor, who always knew the betrayal was supposed to happen.

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In the live-action crossover, Lyla Michaels (Audrey Marie Anderson) has her own blue Harbinger costume, which is less revealing and doesn't need a blonde wig like her comic counterpart. Both Harbingers follow the same arc.

6 6. The Flash's Death

The comic is widely known for the death of The Flash, aka Barry Allen. The Flash has to stop the Anti-Monitor's plan from destroying Earth. The Flash has to run like never before in order to take down the anti-matter cannon.

After the cannon self-destructs, Barry's body disintegrates and becomes lost in the speed force. For the most part, the anti-matter cannon is a crucial point in the crossover. Though death was inevitable, the Flash from Earth-90, (John Wesley Shipp) takes Barry's place and sacrifices himself in order to save Earth-1 from the anti-matter wave.

5 5. Supergirl's Death

Supergirl being held in Superman's arms.

The comic has the most iconic cover ever, which is of Superman holding Supergirl's dead body in his arms. Supergirl sacrificed herself in order to save Superman during his losing battle against the Anti-Monitor. The live-action crossover switched genders in order to recreate the iconic cover.

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After retreating to the vanishing point, Superman from Earth-96 (Brandon Routh) dies right in front of his cousin and transforms into Lex Luthor. Grieving for her dead cousin, Supergirl has lost all hope as she holds onto his last remains, his costume in her arms.

4 4. The Spectre

Spectre vs Anti-Monitor

The Spectre used to be a gritty cop named Jim Corrigan in a previous life. Because Jim had been denied entry to the afterlife, he is sent back as a vengeful spirit with a mission to eliminate evil. The Spectre plays a pivotal role in the comics as he has to confront the ultimate evil known as the Anti-Monitor.

Spectre uses his magic to create an energy overload and merges the last remaining Earths into a single universe. Oliver Queen has to become the Spectre in order to become powerful enough to defeat the Anti-Monitor and recreate the universe.

3 3. Waking Up

After Spectre creates the single universe, the superheroes are finally able to return victorious to the present. Only the survivors who were pivotal at the dawn of time are blessed and cursed to remember what happened during the original events. Earth-2 Superman wakes up in his office and discovers he is part of a new reality.

In the fifth installment, the episode starts with Supergirl waking up scared and confused. No one seems to remember the crisis except for Kara, who's already late for work and about to miss Lex Luthor winning the Nobel Peace Prize.

2 2. The Giant

Like in every horror movie, the killer comes back to life for one last attempt to strike vengeance. Even after being defeated by the Spectre, the Anti-Monitor returns for one last attempt to strike down his opponents. In the new Earth, the Anti-Monitor transforms himself into a giant and attacks the city.

In the conclusion, the superheroes are reunited to defend their new Earth-Prime from the Anti-Monitor. Supergirl even attempts to sacrifice herself to save Superman, who is caught in the giant hand of the Anti-Monitor, before being interrupted by The Atom.

1 1. Marv Wolfman

Crisis Marv Wolfman Marvel Comics

Very few comic book writers are given enough credit when their work is adapted for television and movies. Fewer writers are fortunate enough to become like Twilight Zone creator Rod Serling, where their creation has a face that audiences can point to. Writer Marv Wolfman not only wrote an episode of the live-action crossover, but he also appeared as himself in a hilarious scene.

In his cameo, Wolfman asks for an autograph from the Flash and Supergirl, the same superheroes he killed off. Wolfman gives the explanation to the two heroes that they have always been on the same Earth.

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