Though the two DC Comics superheroes have crossed paths many times before, Supergirl, the Girl of Steel, has occasionally proven that she's really stronger than her cousin, Superman.

Though Clark Kent perceived himself as the last son of Krypton, there was actually another survivor from his home planet. As the two share the same family bloodline, Kara Zor-El happens to be the biological cousin of Kal-El. As Supergirl also lost her own homeworld, Superman didn't feel alone anymore because he found someone like him, learning to fit in with the rest of humanity.

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Created by writer Otto Binder and designed by artist Al Plastino, the Supergirl from Krypton made her first appearance in Action Comics #252. Even though Superman lost her cousin in the crossover event, Crisis on Infinite Earths, her popularity amongst readers couldn't be killed off. Although Supergirl has about the same superhuman abilities as her relative, she has shown to be stronger in some regards. After all, before Krypton was lost forever, Supergirl was meant to take care of her baby cousin and protect him from Earth's dangers.

10 10. Nevertheless, She Persisted

In the second season finale of the CW series, Supergirl (Melissa Benoist) found herself pitted against her Kryptonian cousin, Superman (Tyler Hoechlin). At the time, Superman was being mind-controlled by Daxam's Queen Rhea (Teri Hatcher).

Destroying property and causing explosions along the way, the epic fight between the two took place across the streets of National City. Supergirl had to hurt Superman in order to wake him from his trance. Because she wasn't holding back, Supergirl used the full force of her punches and beat Superman to a pulp, knocking him out cold.

9 9. Apocalypse

In the animated Superman/Batman: Apocalypse, the Man of Steel is about to learn that bad girls tend to have more fun. As Kara had just crash-landed onto Earth, she didn't really understand how to control her superpowers, prompting Wonder Woman to reluctantly train Kara on how to fight.

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Unfortunately, Darkseid wants to mess around with Supergirl's rebellious spirit and manipulate her teen angst. During their intense battle, Superman can barely hold his own against Supergirl, who is fighting with a seductive outfit and sharp haircut to match her rebel persona.

8 8. Red Daughter of Krypton

Supergirl Red Lantern

During the New 52 era, Supergirl discovered she could wield the red power ring. The red power rings are a force of hate feeding off the bearer's unchecked rage. An orphan with no home to call her own, Supergirl was feeling abandoned by her friends and family after being stranded onto Earth.

Due to her anger being unfiltered, Supergirl immediately felt connected to the uncanny power from the power ring. With her superpowers combined with the raw energy of the ring, Supergirl, as an enraged Red Lantern, was too much to handle for Superman.

7 7. Matrix

Superman learned the hard way that hell hath no fury like a woman scorned. Hailing from an alternate reality, Matrix took over the mantle of Supergirl on Earth-Zero and fell in love with Lex Luthor's son. Supergirl's heart was broken after discovering Lex Luthor had faked his death and implanted his brain into a clone.

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Lex even attempted to clone his lover so that he could control an army of Supergirls at his fingertips. Superman didn't want to get involved in this lovers' quarrel and stepped away as Supergirl trashed Luthor's entire lab, sending Lex into a coma.

6 6. Created Equal

Supergirl is one of the few female survivors in Fabian Nicieza and Kevin Maguire's JLA: Created Equal. In this Elseworlds vision of a dystopian future, a cosmic storm brought in a mysterious plague that wiped out the entire male population.

Because he is a Kryptonian male, Clark Kent believes he is actually a carrier of the disease and has to exile himself from Earth. In a world without Superman, Linda Danvers has to become stronger than Supergirl and officially becomes Superwoman.

5 5. Act of God

Supergirl has to deal with the loss of her superpowers in Doug Moench and Dave Ross' JLA: Act of God. In this Elseworlds tale, every superhero has lost all their powers suddenly. Refusing to feel worthless like Superman, Supergirl joins the police force and becomes a cop.

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Realizing there are other fallen heroes unable to adapt, Supergirl sets up a recovery association called The Phoenix Group. After training with Batman to fight better, Supergirl then decides to call herself Justice and returns to fighting crime like before.

4 4. Elseworld's Finest

In a world without Superman, Lex Luthor reigns supreme in Elseworld's Finest: Supergirl & Batgirl. In this alternate reality, Lex cold-heartedly murdered Superman as a child and kept his remains in a jar. Luthor has been experimenting on a corpse in his secret laboratory.

After realizing Luthor is a truly evil person, Supergirl teams up with Batgirl to take him down. Because the public deserves to know the truth, Supergirl tricks Lex into confessing his crime in front of a live broadcast. Not only did Supergirl defeat Luthor, but she also took down the Joker with one punch.

3 3. Superman #376

Very few heroes are able to say no to Superman, especially when he gives an order. In writer Elliot S. Maggin and artist Curt Swan's Superman #376, Linda Danvers' coming-of-age tale starts with her thinking about leaving Kansas.

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Linda really believes she can juggle the double life of an actress and handle the responsibilities of Supergirl. Superman doesn't want her to leave for Chicago and asks her to stay behind. As she is her own woman, Supergirl does not concede to Superman's demands, stands up for herself, and demonstrates her true independence.

2 2. Breaking The Chain

Breaking The Chains Supergirl

From Lex Luthor to Doomsday, Superman has amassed a long list of enemies who want him dead; however, he didn't expect someone close to him to be the one to actually murder him.

In Supergirl: Breaking The Chain, Kara's entire history has drastically changed for the worst. Due to kryptonite poisoning, Supergirl starts to suffer from violent hallucinations. With fake memories implanted in her head, Supergirl believes that she was raised since childbirth to kill Superman. In her morbid hallucinations, Supergirl stands triumphantly, covered in red blood, as Superman lies on the floor dead.

1 1. Crisis On Infinite Earths

Everyone expects Superman to save the day especially when there's a cosmic super-villain involved. Everyone is expecting Superman to win against The Anti-Monitor, but he is easily defeated during their confrontation. Though she could've lost hope, Supergirl did the opposite and got into the fight against the Anti-Monitor.

Supergirl comes across as the real and stronger hero in the crossover event, as she actually defeats the Anti-Monitor. Her death is even more heartbreaking because Anti-Monitor shoots her with his anti-matter gun while she was stalling for the other heroes to escape.

NEXT: The Black Order vs. The Justice League: Who Would Really Win?