Time-line has been slightly altered for the sake of this cross-over.

ONE WEEK LATER...

Barry wasn't fast enough to save Iris from getting hit in the shoulder, but at least she isn't dead.

But now we can't trust Harry because he was stealing his speed. That's why he was so slow trying to send Eobard back in time.

I had no clue what I was supposed to do now. I had just saved Cisco from death, Jay now knows about my speed.

Now all we had to do was go to Earth-2 and save Jesse. This should be fun.

"How are we even supposed to get to Earth-2? Cisco isn't sure if he can do it." Barry said as we all sat in silence and confusion.

"Well, I'm assuming this Cisco person has a meta-power involving being able to creating a wormhole from one earth to another, and that basically means that my entire life has been a lie and there really is a multiverse even though I already knew it existed... Oh dear I'm rambling." Every froze up, turning to the new voice except for Barry, who had been facing away.

"I know that voice." Barry said as I turned to him and frowned. When he turned to face us, the biggest smile was plastered on his face.

"Hello Barry." The girl said as she smiled. This girl looked familiar, like I had seen her in a photo or on the news somewhere.

"Felicity." Barry said as he walked up to her, bringing the girl into a tight hug. "I haven't seen you since high school oh my god."

"A-and who is this?" Cisco asked in a flirty tone as Barry let go of Felicity, who looked at Cisco with a smile before our stretching her hand.

"Felicity Parker, CEO and co-founder of Parker Industries ." She said, shaking Cisco's hand as my mouth dropped open.

"Wait- you mean multi-BILLION dollar Felicity Parker? The woman who created the cure for several supposedly 'incurable' diseases?" I said shooting you as she shrugged and smiled.

"That would be me." She said with a chuckle as I gasped, looking at Barry.

"HOW COULD YOU NOT TELL ME THAT YOU WERE HIGH SCHOOL FRIENDS WITH A BILLIONAIRE?" I yelled as Barry raised his hands up.

"I moved away in my freshman year with her, Daisy! It's been a few years and I forgot." He said as Felicity gasped.

"Rude of you to forget your childhood best friend." She said with a scoff, crossing her arms.

"Sorry. Anyways, what are you doing here?" He asked as she shrugged.

"No reason, other than asking if you're the Flash." She said as everyone's eyes shot open.

"H-how did you-"

"Bartholomew. Henry. Allen. Need I remind you that I grew up with you for 15 years. Also, your mask does not hide your features well AT ALL." Felicity argued as Cisco gasped.

"I don't like her anymore." He pouted as I rubbed the back of my neck. She wasn't really wrong.

"He has very distinct features..." Felicity continued as Barry turned to me as if I could help.

"Don't look at me, this woman is smart." I said as she smirked.

"Anyways, I need help with something." Felicity said as she walked to the center of the Cortex and lifted up her shirt to reveal a large black circle with purple glowing light that stretched from her rib cage to her hip.

"WOAH OKAY." Cisco said as he looked away from whatever was on her.

"It showed up as a small dot a few days ago. It didn't get so big until last night, and it just keeps growing. Now, I'm assuming this is happening because I was doing an experiment to make a new cure for an immune disease a friend of mines daughter has, and I bumped into some chemicals late at night and stepped on the glass of a shattered tube. She glass went through my shoe, and well... now I'm here." Felicity informed us as i got up and looked at it.

"Is it causing you any pain?" I asked as she frowned and shook her head.

"That's the problem. This looks like I should be in pain, but I'm not..." Felicity said before lowering her shirt and sitting down, sighing. "The day Barry before moved away, I was hit by a radioactive bolt of electricity, I gained these... powers." Felicity started as everyone's eyes widened. "I could read minds, conjure up electricity and even fly... I was assigned to work with a few people, save the world a couple times... but a couple years later... I lost my powers. I've been trying for years to get them back, to-to be a hero again. To save more people than I already am but... I have never been able to recreate the exact circumstances that gave me my abilities."

I turned to Barry, who looked just as dumbfounded as the rest of us. This girl that Barry knew is showing up years later, with something none of us have ever seen and claimed to have powers of her own, and knew Barry was the Flash. Was I dreaming?

"The last time I ever used my powers, I was fighting a bad guy that used glasses created by someone I once knew as a weapon. I-I was stabbed in the stomach and bled out. My powers were able to bring me back from the dead, and I haven't felt pain since, even when my powers disappeared. What if this... thing... that is growing on me is killing me, and I don't even feel it?" Felicity asked, her voice trembling in fear. Now we had another thing to deal with.

I knew Barry would never forgive us for turning Felicity away. She was his best friend, we can't leave her to die. Maybe we can still save her. Maybe we have time. But what if she was a bad guy? Could we trust someone Barry hasn't seen since high school?

"I can.. Take some samples and run some tests." Caitlin interjected as Felicity bore a small smile. Her face showed hope, one that thought she would be safe of whatever is growing on her.

Barry walked up to me and Felicity, sitting down next to her. "I swear to you Felicity, we are going to help you." He promised as Felicity smiled, nodding.

"Thank you, Barry." She muttered and hugged him. I should probably feel jealousy, but the hug she gave him didn't mean anything, especially since I noticed a wedding ring on her finger. I'll ask her about the lucky guy later.

One Hour Later...

Caitlin was still running tests when I walked into the medical room, sitting in a chair next to Felicity, who was currently fumbling with her ring nervously. 

"So." I said in a monotone voice, nudging Felicity's foot as she looked at me. I tilted my chin in the direction of her ring. "What's his name?" I asked with a wiggle of my brows as she looked at her ring and smiled.

"Peter.. I could probably go on about how much I love him. Just had a kid with him last year... Anthony... it feels like forever ago since I saw the two..." Felicity said as I frowned. Peter? Where have I heard the name Pet- PETER PARKER.

"HOLD THE PHONE." I yelled as Felicity jumped, looking at me with wide eyes as I went back into a whisper. "Peter Parker? Like... Like Spider-Man Peter Parker?" I asked as her eyes widened even more before she realized.

"The movies about us... Dammit I almost forgot about those. Yeah... That Peter Parker." She answered as I realized as well.

"Wait... That means that Tony Stark... is dead?" I asked as Felicity nodded tears forming in her eyes as she remembered her mentor, who she had always seen as a father.

"They got his death wrong though. It was when Peter nearly died too... Fighting a man named Electro. Got a hold of Tony and... French fried..." Felicity said as she quickly wiped away the tear. "Peter didn't talk to anyone for months..." 

"W-wow... Wait so what you're saying is Peter is Tom Ho-"

"No. He's not Tom Holland. He looks nothing like him actually. Comic book Peter. That's what he looks like. That 'Endgame' shit never happened because I killed Thanos. Marvel just wanted money and RDJ's contract was over." Felicity said as my mind went haywire. 

"By the way, I should mention that I didn't find out Barry was the Flash because of his features. I myself have traveled through the multi-verse. Did you know there is a world where you guys don't even exist and there are movies and comics about you guys? Well not you, I have never seen your face in the show or comics so I know absolutely nothing about you. In the comics Barry ends up with Iris, has that already happened?" I quickly shook my head at the question, responding with a point of my finger at myself. "Oh he's with you got it. Anyway... That's how I found out Barry is the Flash, and Caitlin is- um... Never mind. hasn't happened yet. BUT, it weirds me out that the actor who plays Barry in that Earth looks exactly like Barry here." Felicity continued to ramble more about our worlds of Marvel vs DC. Guess now I have to choose if Felicity's husband or my boyfriend is better. 

"Do you think you can open a portal to Earth-2?" I asked Felicity as she quickly shook her head.

"No can do. Last time I traveled through dimensions I nearly ended up being a human head with the body of a sea lion." Felicity said as I frowned in confusion. "But, I can help Cisco with opening one with his hands. Vibe is his name, right? Oh shit or is this before you find out- I'm going to shut up in case it is." Felicity said as I frowned.

"Find out what?" I asked. Whatever it was, I needed to know now. Felicity's face had a look of hesitation and regret, but this is probably important information.

"Are you guys traveling to Earth-2 to save Jesse?" Felicity whispered as my eyes widened, nodding. "Okay so we are basically on season two... um what is it episode 13? 14?" She said to herself. "Oh dear... Um anyways you guys may or may not be close to figuring something out... Don't trust-" before she could finish, Felicity yelped, quickly standing up when she saw Jay. Her entire body went stiff, as if she was afraid.

"Who is this?" Jay asked as Felicity tried to put on a smile.

"Felicity Parker." She answered bluntly as he nodded.

"Jay Garrick." Jay replied as Felicity hummed, looking over at me.

 I tried my best to think of what she was going to say, but now I think it's best I don't find out.