I do not own Harry Potter, Flash, Arrow, Supergirl, or any other publicly recognized references within this story.
Chapter One
Barry watched the giant metallic fist of Savitar closed in on him. The blade that had extended from the wrist of the God of Speed glinted in the limited light of Alchemy's lair as it neared him. Barry tried to close his eyes to avoid the sight but he couldn't he was paralyzed with fear. Not even Thawne or Zoom had managed that. He looked at the blade as it neared him and just when it was a hair away from him it stopped. Looking at Savitar he watched as the speedsters head lifted as though he was looking for something. Then he let loose an enormous cackling laugh. "He's here," Savitar said before turning back to Barry. "You are lucky, Flash. I have a more pressing issue to deal with."
Barry found himself falling onto the floor knocking the wind out of him. Looking around he saw Joe kneeling next to the cocoon that had appeared around Wally. Though it was painful he managed to get to his feet and stumble over to his foster father. "Cisco, you there" he coughed out.
"Yeah, man. What happened?"
"I'll tell you later. Right now, we need to get Wally back to the lab. Make sure he's okay."
"Did Alchemy get to him?"
"No, he did it himself."
On the other side of the city a metallic grey and blue breach opened. Moments later a streak of white lightning came roaring out of it before stopping. The speedster stopped several feet from the breach before it closed. The street lights reflected off the metallic white and black of his costume. From the waist and elbows down the suit was black, though there were white outlines around the joints. The rest of the suit was stark white as though it had been bleached heavily. Out lined on the front of the suit, contrasting against the black background was a vertical lightning bolt.
The speedster raised his head before looking around. Seeing nobody around him his eyes glowed blue for a brief moment before the cowl of his suit started to retract like metal plates. "Well, Harry," he said to himself. "This looks like the place. Now, where are you?"
"So, this Savitar was moving so fast that he was practically invisible" Caitlin asked.
"Yeah, he was so fast that all I could see was the lightning," Barry said, sitting on the gurney in the medical lab. "Joe said he couldn't see anything though."
"Savitar must have been moving so fast that only a speedster would be able to see him," Caitlin said. "But that would mean he'd be moving at faster than light speed. Not even Evil Wells or Zoom could move that fast."
"Thanks, that makes me feel much better" Barry said. Hoping off the gurney gingerly he turned to the monitor in the cortex. He saw Wally's cocoon lying in one of the rooms below them, Joe and Iris standing by as Cisco and HR ran special tools over the cocoon. Pressing the button for the intercom Barry asked "how's he doing, Cisco."
"Well he's alive, that's for sure. But this cocoon it's not made of anything I'm familiar with. There's no getting him out of their and no idea how long it will last."
Releasing the button for the intercom Barry sat back in one of the chairs and contemplated what had happened.
"It's not your fault, Barry. There was nothing you could do."
"Yes, there was. I had a chance to get to Wally before he picked up the Stone. Now he's lying in that cocoon because I decided not to act" Barry said.
Caitlin stepped forwards to place her hand on Barry's shoulder. The moment she did though an alarm started to blare. Caitlin ran around to the computer and started typing away. "All the cameras are fine, there's nothing" she said.
But Barry's eyes caught it. Streaks of white lightning, very faint on the cameras.
"This place is as complex as the Batcave" Harry said before twisting around another corridor. He was scanning each room as he went by it. He had found the general location of this worlds Speedster by looking directly into the Speed Force. Any more than was necessary though ran the risk of causing irreversible brain damage. He was about to go down another corridor when he sensed it, the influx of Speed Force behind him. Peering over his shoulder he could see the man he was looking for. His red suit and yellow lightning reminded him of the Flash of his world, but the lack of dark hair flowing behind this speedster, and the lack of breasts meant this speedster was not the same. He should have expected that.
Allowing the scarlet speedster to catch up with him momentarily he suddenly stopped, causing the red streak to fly past him into the wall. "Well, that wasn't very graceful" Harry said before walking closer.
"Savitar" the speedster groaned out as he got to his feet.
"Savitar? No, does this look like a suit of armor. I go by Velocity, though my real name is Hadrian Potter. What do you call yourself?"
"I'm the Flash."
"Flash? Should have figured you look exactly like her, the suit I mean."
"Her? Who's her?"
"Not important right not. Back to the matter at hand. My name is Hadrian Potter, I'm here to warn you."
"So, you know this Savitar, how? Barry asked as he stood with Cisco and Caitlin in the cortex. He had decided to leave Joe and West out of this, they had enough to worry about. In front of them stood Velocity, or Hadrian as he also introduced himself as. He was still wearing his suit to prevent Hadrian from known exactly who he was speaking with.
"Savitar was a speedster from my world…"
"Which is?"
"Earth, though given the numerous world's we've fought on, I'd say I'm from Earth seven."
"Okay, who is he?"
"Savitar was once a man, just like us. But his powers went to his head and he renamed himself a god. He used his speed to terrorize my world until the day he broke it."
"How?"
"He vibrated his cells at just the right frequency that the Earth literally started to crack in half. Me and my team, the Justice League, tried to undo the damage but it was too late. Earth-7 split into pieces. I barely managed to get off world and track Savitar down."
"The Justice League?"
"Yes. We were a group of heroes that banded together to fight enemies no single hero could fight alone. There was myself, Superman, Batman, Wonder Woman, the Green Lantern, Aquaman, our world's Flash, and…" He trailed off.
"What is there a Flash on every world?"
"Pretty much, yeah. Though one thing I noticed being on several worlds is that they are not always the same person. The Flash on my Earth was named Iris West."
"Iris?"
"Yes, given by the look on your face I take it this world also has an Iris West."
"Yeah."
"What the hell," Joe said as he entered the cortex. "Who are you?"
"Velocity, you are? Hadrian said."
"Detective Joe West.'
"I've heard a lot about you, at least about the Joe West on my Earth."
"What are you doing here?"
"I'm here to help against Savitar."
Seeing the blank look on the detectives face, Hadrian turned to Barry and said, "did you not tell him?"
"You had too much to worry about" Barry said to Joe.
"Ba…" Joe said before realizing that his foster son was still in his suit. "Flash, can I speak to you for a moment."
Following Joe out into the hall Barry said "look, Joe, I'm sorry I didn't tell you about Savitar but you were busy with Wally, and…"
"I don't care about Savitar or whatever his name is. This is exactly how Zoom tricked you. He could be Savitar."
"I know that, Joe. That's why I'm still wearing my mask. I'm going to let him do his shtick and then I'm going to let his stick around."
"What? Why?"
"Keep your friends close and your enemies closer."
Hadrian looked around the room he was standing in as the Flash and the detective entered the room. "You said you could help, how" Detective West said.
"That is the question. I've been trying to for a long time. But his armor is impenetrable. I need your help to stop him.
"Kill him you mean," Detective West said.
"My planet, people I knew, people I…people I loved died at the hands of Savitar and his speed cult, if killing him is the only thing I can do to make sure it doesn't happen to another world then I'll do it."
"Wait a moment you said 'Speed Cult'" the guy with the faint British accent said.
"Savitar's henchmen, his Speed Cult, are people who worship him. In return he grants them access to a fraction of his powers. They're not enough to rival true Speed Force conduits like Flash or myself, but they can certainly be a handful for mundane law enforcement."
They stood in silence for a moment before Flash said "we need to talk about this among ourselves."
"Do what you must, Flash. But remember Savitar will not give you much time." With that Hadrian left Star labs, his white lightning streaking behind him as he ran.
"What do you think" Barry said as he removed his cowl.
"This is what happened with Jay, I mean Hunter," Cisco said, "he said the exact same when he came here."
"Savitar is even more dangerous than Zoom," Caitlin said. "He's even faster than Reverse-Flash and Zoom combined."
"That's a bit far, isn't it" Joe asked.
"I can't even see him when he's running. It's nothing but white lightning."
"White lightning? There's all the proof you need, Barry. He's got the same lightning as this dude."
"Not that it matters" HR said.
"What? What do you mean it doesn't matter?" Joe said.
"If Savitar really is this fast, and if he can crack Earth's open just by vibrating, then we will need all the help we can get."
"Do they have a Savitar on your Earth?"
"No, but it's possible that there are specific versions of a person in a dimension. Dimensional singularities if you will."
"As much as it pains me to say it, HR is right," Cisco said. "We're gonna need a lot of help taking down someone who the 'God of Speed'."
White lightning streak across streets and up buildings before stopping on the roof of the tallest building in town. Retracting his cowl into the rest of his suit, Hadrian looked out over the world in front of him, information flying across the heads-up-display his enhanced brain granted him. The sound of space collapsing in on itself for a moment sounded in his ears. Turning around to face the breach he was shocked when he saw who came through it.
"Hello, Harry" Hermione said as she stood in front of her former brother.
"You have a lot of nerve showing up here after what you did" Hadrian said.
"I know you're mad. But it was the only way."
"You killed her."
"And you haven't killed people. Don't be a hypocrite, Harry. She would never have followed you. G…"
"You do not get to say her name" Hadrian roared before speeding over his once-best-friend. He lifted her up by the throat and dangled her over the edge of the building.
"You won't" Hermione croaked out before the sound of space collapsing appeared again. This time an enormous metallic individual stepped out of the breach. "Master" Hermione said as she witnessed who stood before her.
"I recommend that you put her down, Harry" the computerized voice of Savitar said.
"With pleasure" Hadrian replied as he let his grip go. Hermione's cries rang through the air as she fell to the ground. Neither of them moved until Savitar twitched a finger and the cries stopped. Looking down Hadrian could see that a breach had opened, below them and the faint form of Hermione Granger swirling within.
"Neat trick" Hadrian replied.
"I decoded the second layer of encryption from the Savothian data net. You'd be amazed as to capabilities of the Speed Force in transdimensional travel. Did it go as planned?"
"Yes. The Flash and his team are thinking it over. Figured they would given their past. I'll give them some time to think on it."
"Good, just remember what your true mission is. Remember who it is you serve."
'Not you' Hadrian thought.
"And you remember that you are nothing more than a mistake, a remnant of a desperate attempt to save the world."
"Trying to make me feel guilty? Gods do not feel guilt" Savitar said as he disappeared back into a breach.
"Not all Gods are immortal" Hadrian said out loud before disappearing into the city himself.