Okay, this is a suggestion by InsomniacMaybe (Rad name bro/girl) for Pied Piper and Cisco to trade identities. In case you didn't see the episode of the Flash, Barry went back in time, and now Hartley's a good guy, but don't worry if you miss Evil Piper, there's always Earth-2...

"Are you ready, my young Padawan?" Cisco asked.

"I was born ready, Master Jedi." I said.

My name is Hartley Rathaway. I study the use of sound waves for militant technology at a division of Mercury labs in National City, and I was just in Central City visiting my parents when Cisco called me.

"Okay, Hartley, from now on, you'll have to call me Vibe, because I have powers!" he cheered into the phone.

"Really? What can you do?"

"I can vibrate things. More specifically, I can manipulate vibrations, which sounds more impressive when you consider that anything contained in the multiverse vibrates at its own natural frequency and leaves a specific particle configuration that can be tracked, meaning I can see into the future, past, anywhere on earth, anywhere in the multiverse, and manipulate any living or non-living object in any of them! Basically, I'm the most powerful metahuman in the city, probably right up there with the Flash."

"Interesting." I said. "You know, I'm trying to incorporate the use of soundwaves into military technology but can't quite get the science to work. Perhaps I could come over and we could discuss?"

"Alrighty, young Padawan. You will learn the ways of the Vibe."

So I came over to Central City, raced over to STAR labs, and came through the door (you know, I expected more security protocols) to see Cisco dressed in some kind of red suit and a black leather jacket with mechanical goggles over his eyes. "Hello, young apprentice."

"What are you wearing?" I asked.

Cisco grinned, "It's my Vibe suit, built to protect me from sonic vibrations and prevent my own body from giving off waves that'll distort my powers."

"But I thought your powers worked without the suit?"

"Also, it looks really badass. Barry and Caitlin are out with Wel – with a doctor, and we have the whole lab to ourselves. Show me what you've got."

I put on the gloves that I made and said, "These are made to emit sonic waves that will match the natural frequency of any technology that it meets. Want to see it in action?"

Cisco smiled, "Shoot me."

"Wait, are you sure? These are built to disable military helicopters, so it could seriously damage-"

"Don't worry, my suit will protect me from the boom. And besides, Oli – I mean Green Arrow has a lot of badass scars. I need to get me some of those."

I shrugged and aimed my gloves. I flexed my knuckles, which sent a signal through transmitters in the fingers and made a wave of sonic energy shoot out at Cisco. His suit definitely protected him from the rib-shattering, organ-exploding part of it, but he was still thrown backwards across the room and crashed into the Flash suit in the back.

"Cisco, are you okay?" I asked, and ran over to help him up.

Cisco's eyes widened and he started laughing, "Damn! That's like some Optimus Prime level shiz right there! You know, theoretically, I should be able to do that. Do you mind if I try on the gloves?"

So, he put on the gloves, and a green hood to complete the look. In return, I got to try on the suit and Vibe goggles to see up close what they looked like for my research. It fit me pretty well, but Cisco's head was a little big.

"So, I'm Vibe?" I asked.

Cisco nodded, satisfied. "And I'm... what would you think of Decibel as a name?"

"Actually, with the gloves and all, I was thinking of calling myself Pied Piper."

Cisco nodded, "Not bad. So tell me, how do I use these Robocop hands?"

Suddenly, there was an alarm from the computer at the desk, and Cisco ran over to see what it was. He turned on the security cameras and said, "Oh, crap."

"What is it?" I asked.

"No. It can't be. Sand Demon's dead! He can't be-"

Then, the floor started rumbling, and both of us were thrown up by an explosion through the floorboards that turned out to be sand. I landed on the floor next to the doorway and Cisco was thrown up onto the table.

Then, the sand started to gather up in the middle of the room and form a pile that turned into the shape of Eddie Slick, AKA Sand Demon.

"I'm looking for the Flash!" he yelled. "I don't care which earth he comes from."

"The Flash?" I asked. Sand Demon's hand exploded, turning into a stream of sand and coming for me, pinning me to the floor. I had to think fast. Did Cisco have any weapons on the suit? He had some knives on the inside of the leather jacket, but those wouldn't work. Come on, think, Hartley!

Suddenly, the sand jumped off my body and sunk back into the ground while Sand Demon exploded back into grains of sand on the floor. I leaned up to see Cisco, who had just blasted him with my sonic gloves.

"Damn, baby! That's how we do it in Pied Piper Land!" he cheered, just as the sand on the ground begun to vibrate and reform.

"What do I do?" I asked.

Cisco kept blasting the sand with my Piper gloves, but he wouldn't be able to keep it up for long, and Sand Demon would take any opportunity to reform. He yelled, "What would Cisco do?! The answer is grab a gun from the weapons cabinet!"

I ran to the cabinet and looked at my options. Gold gun, Dr. Light gloves, mirror-portal gun, weather wand, explosive boomerangs, they weren't going to do any good. Then, I realized something.

I took the mirror portal gun and took out the power core, replacing it with the Vibe goggles. Theoretically, the goggles should have been absorbing the radiation coming from Vibe's powers for a long time, and since the mirror gun was designed to refract radio waves in such a way that anything surrounding it would be pulled through them, I believed I had just come up with a really Cisco-ish idea.

"Cisco!" I yelled. "On my 'go', stop blasting Sand Demon!"

"Umm, the current plan's going pretty well." he said, but waited for my cue. I said go, and he stopped blasting the sand. It started to reform into Eddie Slick's form, and I aimed the gun. I blasted the bad guy, and a ray of white light shot out of the gun and engulfed him. Blue light shone from him, and soon, he was gone. He had disappeared from this dimension.

"Where did he go?" Cisco asked, taking off my Piper hood.

I shrugged, "I sent him to another dimension. Which dimension do you vibe the most?"

"Earth-2. Maybe he'll be less violent since we sent him home." Cisco held up his hand for a high-5, and started sweeping up the sand. Suddenly, his eyes swung open and he stepped back in shock. I asked him what was wrong.

"I had a vibe."

"Of Earth-2?"

"No. I knew Sand Demon died before. Someone is bringing dead metas back to life to wreak chaos in the city, just so he can gain control of the remains. Someone named Brainiac. We have to tell Barry and Oli – I mean Flash and Gree – oh, what the hell, Barry and Oliver."

Keep those suggestions coming! And let me ask you guys – would you hate me for messing with the continuity and putting Supergirl in the same universe as Flash and Arrow? The reason is that it would make it a lot easier to do what a lot of you want – to crossover Arrow, Flash, Supergirl, Constantine, Vixen, and maybe even Gotham? Oh, and I promise, the Brainiac references are going somewhere...