A/N: Here is the new chapter released. This chapter is inspired by the Invincible tv series, which I mentioned in earlier chapters.
Somewhere in Kaiba...
At dark, Wonder Woman, Donna Troy and Gotham Girl have been summoned to respond to an attack in an abandoned warehouse that's held many children hostage.
"How many children did they held hostage?", Gotham Girl asked.
"Twenty.", Wonder Woman answered.
"That's a job for one of us. Not all three of us.", Donna said.
"A tip was given about Circe behind the kidnapping of twenty children.", Wonder Woman said.
"Circe kidnapping children?", Donna is shocked and confused. "It's uncharacteristic of her to take children... unless it's to get our attention.".
"We're about to find out.", Diana said.
The three fighters break into the building. Much to their horror, the children and even Circe are all dead.
"Who could've done this?", Donna said.
Something fast appeared behind Gotham Girl. Gotham Girl feels someone behind her. Before she could face the attacker, her neck was suddenly snapped.
Diana and Donna turned, and watched in horror as Gotham Girl fell to the ground, dead.
"Gotham Girl!", Donna exclaimed. Then, a punch penetrated her back, causing Donna's body to drop as she succumbs to death.
"Donna!", Wonder Woman exclaimed in horror. She finally saw who killed Gotham Girl and stabbed her protégé. She gasps finding it hard to believe her eyes are showing her the killer. "No... it can't be you...". The red and blue attire, the blonde hair, the face, the symbol of 'S'. Wonder Woman slightly backs away as though the thoughts overwhelming her are killing her. Diana is unable to process who the killer is.
The killer is right in front of Diana.
Angered by Gotham Girl and Donna Troy's deaths, Diana threw her fist at the killer. The killer swiftly caught Diana's fist, and immediately crushed Wonder Woman's hand. Diana grows as she bears the pain. Wonder Woman bulldozes her opponent making her hit a desk. When Wonder Woman reaches for her Lasso of Truth, she realises she is missing it.
It gets much worse for Wonder Woman.
Diana realized the lasso is tied around her neck. The lasso glows as Diana falls to her knees.
The killer rises to her upright position, arriving at Diana's side.
Diana perceives the killer has been holding her lasso, and must've tied it around her neck during their fight. Diana can't fight anymore with the lasso around her. She is at the mercy of her enemy.
The killer's eyes are cold toward Diana.
"Why... Supergirl? Why Kara?", Diana begged for an answer. Supergirl has a zero tolerance for murder. What is the reason for breaking the one rule she endured for decades? Diana desired the answer. Supergirl has not answered her question. "Why?".
Supergirl tightens the lasso's grip on Wonder Woman. She then decapitates Wonder Woman finally ending her life.
In Metropolis, a commuter monorail loses control and starts speeding down the wrong track, on a collision course with another. Ryan Choi and Ray Palmer as both Atoms board the train and manage to uncouple the passenger vehicles and evacuate the engineer to safety. Unfortunately, they could not leave as an invisible force appears to stop them. The invisible force reveals itself to be Supergirl.
"Ka- Supergirl!", Ray said. "Damn, forgot everyone knows Kara and Supergirl are the same person.".
"Great timing, Supergirl. We need you to carry the train, otherwise the civilians below are going to get hurt.", Ryan Choi said.
Supergirl didn't respond.
After an awkward silence, Ryan wonders if Supergirl listened to her. "Uh, did you get what I said, or do you have super-deaf-hearing or something?", he asked.
"I don't think Kryptonians have super-deaf-hearing.", Ray Palmer said.
"Supergirl.", Ryan called out again. Suddenly, Ryan feels a hand stabbed through his chest.
Ray Palmer is horrified. "Ryan?!", Ray exclaimed. He stumbled away caused by his reaction to Ryan Choi's brutal death. "Supergirl, why did you-?", Ray stopped asking when a hand unexpectedly went through his chest.
Supergirl killed Ray. She watches Ray fall to the ground. Then she departed.
The train collides with a building, killing many people.
The Outsiders are attacked by Supergirl.
Supegirl snaps Red Arrow's neck, killing him before firing heat vision at Aqualad and Beast Boy. Cyborg fires a blast at Supergirl. Supergirl evaded it and sped fast to reach Cyborg. She grabbed Cyborg and teared him apart.
The remaining members of Teen Titans are shocked at what Supergirl has done to them.
Supergirl continues killing more Titans.
The last person alive in the Titans Tower for Supergirl to kill.
"You bastard!", Ravager said loudly.
Ravager is choked by Supergirl. She's killed when Supergirl used her strength to break her neck.
There has been a crime in Gotham City. The Gotham Knights make an effort to halt the flood of crime. The criminals surround them. Each vigilante fights a few.
"With Batman not here, you pose no threat to my empire.", Falcone said.
The Gotham Knights soon see Falcone gets crushed by Supergirl much to their shock.
"Supergirl?", Batwoman said in surprise.
"Supergirl"?!", some of the criminals exclaimed in shock.
They start to flee. Supergirl turns. In fast motion, she crushes criminals and rips criminals apart.
The vigilantes are petrified at seeing Supergirl killing them. She does not kill. Once Supergirl glared at them, they think what they do now. Do they question her actions or stay silent until she leaves? They perceive those options aren't available as Supergirl made sure of it. She reached them with super-speed.
Supergirl lifts Spoiler in the air, crushing his head.
Batwoman tried to stop Supergirl from killing Spoiler. Her efforts are meaningless. Supergirl smashes Spoiler's corpse into Batwoman hard. She afterward twisted Batwoman's head, killing her.
Batwing flied away, only to sight Supergirl is in front of him. Supergirl struck a fist, impaling Batwing. He is dead.
Orphan knows her abilities are greatly inferior to Supergirl. She tries to escape, but Supergirl is already aware she was about to. Orphan tries to attack Supergirl. Supergirl responds, shooting heat vision disintegrating her head, making Orphan headless as she dies.
Supergirl freezes Hawkfire. She flies straight through Hawkfire, destroying her body.
Supergirl drags Signal far, far, away from this planet, Kaiba.
The Kryptonian has ended most of the vigilantes' lives in Gotham. She leaves Gotham.
Somewhere in Kaiba, the Legends arrived after receiving a call from the present time.
"What are we doing in the middle of nowhere?", Astra Logue asked.
"This is where we were asked to land in.", Ava Sharpe said.
The Waverider suddenly exploded, pushing every Legend away.
They turned their heads, shocked that the Waverider is destroyed.
"No! Not again!", Nate said.
The Legends then see Supergirl landing.
"Wherever we are, there is always hope.", Sara Lance said, smiling. She turns. "It's all right everyone, it's Supergirl.".
After she said it, the Legends and Ava see Supergirl impale a hand in White Canary, which frightened them.
"SARA!", Ava cried in horror.
Supergirl looks up at Ava, firing heat vision. She disintegrates her head.
The Legends are motionless. Some responded by attacking Supergirl. They perceive it was wrong to attack her because Supergirl swiftly ended them mercilessly.
After a minute, Supergirl killed all the Legends except Sara Lance. She faces White Canary. White Canary is on her knees, bleeding. She is no longer able to fight because of the hole in her chest.
Sara never thought of her Universe's Supergirl a killer. She cries to herself, forced to remember that Supergirl killed her best friend, Ava Sharpe. "You... called us to be here in this wasteland... so you... could kill us.", Sara said while her voice cracked. Supergirl didn't respond, her mouth is shut. Supergirl decapitates White Canary.
Supergirl finally returns to Starling National City, washing away the blood, and meeting with Oliver Queen acting like to him as though she had a busy day saving lives when in reality, she killed various heroes.