A stranger attacks Supergirl and then flees, and what is even stranger is who she claims to be. The story will follow the stranger in third person.

A/N: Throughout the story, all A/N will be in bold. This story takes place after the events of Crisis on Earth X. Hope you enjoy! :)

Disclaimer: I do not own Supergirl.

Chapter 1: My Name Is...

"Sal! I lost him," Ali panted as she froze mid-air. "How much energy does the suit have left?"

"We have enough for two good blasts and a portal, ma'am," Sal replied.

"I really need to keep my suit fully charged," Ali sighed, "Anyway, that should be enough for us to take him down and portal back to HQ. We must end this now, execute plan omega."

"Of course, ma'am, he is west of this location. I'll guide you to him," Sal responded calmly.

"Thanks, Sal. On my way," Ali replied as she threw her hands in front of her to fly towards the criminal.

As she twisted and turned around the buildings, Ali focused hard on the task ahead of her, detaining this criminal. "Sal, move to strictly internal thought communication during the fight," Ali commanded.

"I.T. Communication activated," Sal's voice rang out in Ali's head. (All internal communication between Sal and Ali will be in italics)

"Perfect," Ali commented internally as she put on a burst of speed.

Following the path that Sal was showing her, Ali got the blasters on her arms ready to fire. Ali reached the location and saw that the criminal was barreling towards her, so she lined up her shot and fired. The criminal, having anticipated the shot, twisted sideways and put on a burst of speed, crashing into her and almost knocking her out of the sky. Ali temporarily lost her balance but was soon on the criminal's tail again.

"Sal, lock onto target. We only have one shot left, so let's make it count," Ali bellowed as she continued to follow the criminal.

"Target locked, ma'am. Fire at wil- Ali, watch out!" exclaimed Sal.

Ahead a burst of smoke appeared right in front of Ali, and she flew straight into it.

"Gas mask has already been deployed, ma'am," Sal informed.

"Thanks, Sal, but I don't think it is poison. It looks like a smoke screen," Ali thought as she burst through to the other side, searching for the criminal. Ali barely saw a flash of red turn a corner and continued the pursuit.

"Target locked," Ali said as she manually locked onto the target, "firing now!"

"Wai-" Sal tried to warn Ali, but it was too late. The blasts were off. Ali came to a halt in mid-air and watched the blasts on the screen on her arm as they reached their target.

"Bullseye!" Ali exclaimed after the hit was confirmed.

"Ma'am, we might have a-" Sal tried again.

"Cool it, Sal. I got him," Ali bragged as she flew to detain her criminal. From up in the sky, Ali could see the criminal in red writhing on the ground from the blast. "Hurts like hell doe-" Ali began, but as she grew closer, she realized this was not the Kryptonian she was looking for. She realized this was a girl. Horrified, Ali landed and moved to her to see who this was, but before she could get close, she heard the word freeze!

Turning around, Ali saw about six, what she assumed to be agents, clad in black with weapons aimed at her.

"Humans?" Ali asked. "That's interesting. Who are they, Sal?"

"That's the problem I was trying to tell you earlier, ma'am. It looks like we earth jumped," Sal responded.

Ali froze, "We what? How is that even possible? I didn't initiate a portal. How-" Ali groaned putting a hand to her forehead, "the criminal."

"Seems like the smoke screen was really covering a portal that he opened to this earth," Sal mused.

"Clever, he must have taken Jack's portal device after their fight," Ali thought as she rolled her eyes, but her face became hard as Sal's word sunk in. "Wait, what earth are we on?"

"According to the KC records, we are on earth 38," Sal confirmed.

"38? Hmm, open-" Ali started but was interrupted by one of the human agents.

"I said, freeze. Put your hands up or we will shoot," The agent continued.

Ali gave the group a once-over and determined they were not a threat. As she was about to move towards the Kryptonian, Sal stopped her.

"Ma'am, this group has element N among them," Sal informed Ali.

Ali's eyes swept over the group again, analyzing the situation. "Okay, let's go. We can't risk them finding out about what element N can do," Ali decided as she took a step backwards. However, as she moved, three shots rang out. Each bullet hit her chest and fell to the ground. Slightly impressed at their response time, Ali noticed the color of the bullets and decided to look closer, "Element KG?"

"Yes, ma'am. All of their bullets seem to be filled with it," Sal answered.

This surprised her, but her attention was disrupted as an agent broke through the ranks and moved to the now unconscious Kryptonian. Using this distraction as best she could, Ali launched into the air as another bullet ricocheted off her arm, and she flew away.

l-l

Landing near a building, Ali talked to Sal aloud, "how much energy does the suit have left?" She hoped there was at least enough to portal home.

"We have barely enough to portal home; however, I would advise a small charge up before we leave. It's safer," Sal responded.

"Okay, where is the nearest charging station?" Ali questioned knowing full well that there may not even be one.

"There are none like on our earth. However, I could convert the power in the building next to you into the energy we need, but charging will take up to 10 times longer," Sal explained.

"Great," Ali said deadpan. Glancing up at the building, she said, "Starbucks? At least some things never change from earth to earth." She walked into the building and sat next to the only outlet she could find.

After pulling a plug from her boot and plugging it into the wall, Sal updated Ali on the charging situation, "It would take 50 hours to fully charge here, so according to my calculation it would only take about 30 minutes to give us enough power to get home safely."

"Great… Let's just start. We have a mission to finish," Ali commented in her head, clasping her hands together.

Silence fell between the two, and Ali could sense that Sal wanted to say something.

"Speak your mind, Sal," Ali said kind of reluctantly.

"What about the Kryptonian from earlier, ma'am?" Sal questioned.

"What about her? She isn't a part of the mission. We have a job to do, Sal. We-" Ali began.

"We took an oath to protect the innocent," Sal interrupted, "that girl was innocent, and now she is going to die because of your mistake. Aren't you supposed to protect her?"

Ali didn't respond; she simply stared at the people bustling around her living their lives. She, then, lowered her head on her knuckles.

Sometime later, Sal finally broke the silence, "The suit is ready to go."

"Good," Ali muttered quietly. She unplugged from the wall. However, as soon as she unplugged, she knew something was wrong. "Sal?" She questioned.

"Hmm, looks like the suit can't hold a charge," Sal responded uncertainly.

"What does that even mean?" Ali inquired with narrowed eyes and as she shook her head in confusion.

"Each earth vibrates at a different frequency-" Sal started.

"Yes, yes, and when we go to a new earth, our suits automatically adjust all systems to work with the frequency of the new earth. So, when we portalled here, even if on accident, the suit should have adjusted, and there should be no issues, especially with charging," Ali interrupted.

"True, ma'am. However, because of the lack of energy in the suit, it did not automatically adjust, and there does not seem to be enough energy to do so," Sal explained. "We can use the energy while we are plugged in; however, as soon as we unplug, the charge is lost."

Sighing, Ali rubbed her head, "But we have enough to portal home, even unsafely?"

"Yes, ma'am. We could portal home now, if you want to," Sal said.

Ali caught his double meaning, "Why wouldn't I want to, Sal?"

"The Kryptonian, ma'am," Sal commented, not needing to elaborate.

She knew Sal was right, even if she had a mission, she also had a duty to help those who couldn't help themselves, especially those who are hurt because of her.

Sighing deeply, "Will we have enough power to portal back after the procedure?"

"We should, ma'am, barely. However, if we don't, we would just need to be directly plugged into an outlet, and then we should be able to open a portal," Sal explained trying to convince her.

"Trace the radiation signature of my blast. I want to do this quickly, so we can leave," Ali said rubbing her eyes.

"I have already found her, ma'am," Sal responded.

"Of course, you have," Ali replied sarcastically, "where is she?"

"A place called the DEO. It is a secret government organization, according to the KC records."

"Okay, let's get going. We don't have time to waste," Ali said as she took flight.

l-l

Minutes later, Ali was hovering over the DEO in stealth mode. "Do you think they have a doorbell?" Ali asked only half-seriously.

"If you shut off stealth mode, they would register you, recognize you, and -" Sal offered.

"Hmm, I'm going to just fly in and land in the middle of the room," Ali mused nonchalantly, almost sarcastically.

However, before Sal could respond, Ali flew, shoulder first into one of the windows, shattering it, and landed in the middle of the DEO.

Within seconds, Ali was surrounded on all sides by DEO agents. As she looked around, she noticed that all of their guns were loaded with element KG.

"I get it. They think I'm Kryptonian," Ali smiled.

"Seems so, ma'am," Sal confirmed.

"That's not surpr-" Ali began.

She was interrupted when an agent yelled, "I'll wipe that smile off of your face."

Ali turned in time to see an agent swing at her face. Ali definitely could have dodged it, but she was too shocked at the person in front of her to move.

"Alex?!" Ali thought to Sal.

Right then, Ali felt Alex's hand connect with her face, and there was an audible crunch. Alex pulled her arm back, hugging it to her chest, and inhaling sharply as she might have just broken her hand. However, recovering quickly but still holding her right arm to her chest, Alex swung at Ali again with her left arm. Not wanting to hurt her, Ali easily caught her fist and pushed her back slightly to create space between them. As she tried to assess her next course of action, strong arms wrapped around her from behind, lifted her up, and threw her across the room and into a wall.

As Ali slid to the ground with a grunt, she regretted not having a better plan. Suddenly a hand grabbed her by the front of her suit and lifted her against the wall. She grabbed the hand with both of hers but paused when she once again came face to face with someone she knew. "Henshaw," Ali growled to herself as she tensed to fight back, but Sal stopped her.

"It's not Hank. It's a green Martian in disguise," Sal noted quickly.

"A Martian? What?" Ali questioned, confused.

"Give me one good reason why I shouldn't throw you in a cell and not look back," The Martian roared.

Ali eyed him and could see fierceness in his eyes but also a bit of worry. "Because I'm the only one who can save the Kryptonian," Ali said seriously. "By now, you've realized that you can't save her without killing her in the process..." Ali paused to let it sink in, "But I can."

Hank narrowed his eyes, but Alex was the one who spoke up, "Why should we trust you? You could be trying to finish the job."

Ali nearly rolled her eyes, "If I wanted to finish the job, I would have just left and never looked back because in a few hours, she would be dead anyway."

"Dead... in a few hours?" Alex's face paled.

Hank pulled Ali forward from the wall a little and slammed her back into it, but she stayed stoic, "Tell us how to save her if you want to help."

Ali lifted her right arm and pointed to it. "The tech in the suit will save her, but no one can operate it besides me. I understand that you don't trust me, and honestly it is a smart move, but I made a mistake when I shot that Kryptonian. All I want to do is fix it and go home," Ali expressed wearily and slightly annoyed.

Hank let go of Ali, who landed lightly on the ground.

"You're letting her go?" Alex queried in disbelief.

"No, but she could easily have killed any number of us, and she hasn't," Hank pondered.

"And I'm not going to. Look, just let me help her, and I'll get out of here," Ali said as she started moving away from the wall she was bashed into.

"Don't move," Alex commanded, quickly drawing a gun.

Ali raised an unimpressed eyebrow, "Didn't work earlier. What makes you think it will work now?"

Before Alex could respond, Hank stated, "If you truly want us to trust you, tell us who you are."

Ali scoffed, "You wouldn't believe me, if I told you."

"Try me," Hank countered coolly.

"Ma'am," Sal spoke up, "I'm not sure this is a good idea. You shouldn't reveal who you are-"

"You said we are here to protect. Let me do that. It won't matter anyway; they won't get anything just from my name," Ali responded.

Standing up a little straighter, Ali glanced over to Alex and then looked Hank squarely in the eyes, "My name is Alison Danvers."

A/N: Let me know what you think, and if I should even continue the story.