Hey guys...I know this crossover might sound lame but I wanted to do it ever since there are so many crossover with the Avengers and everything having to do with super heroes. Those crossovers are awesome but I wanted to do a unique one. So anyways please R&R!

Oh and yeah...Barry is the Flash ;) My favorite of all the super heroes. Who would like super speed for a power? That would be helpful for running home to pick up homework you left behind XD.

FYI I have edited this...a lot. Please enjoy the re-do :)

Disclaimer: I own none of the characters.

"Barry? There has been reports of disturbances in the down town area," Catlin called typing on a futuristic looking computer.

There was a muffled bang as Barry flew off the treadmill he was running on (at approximately 500 miles per hour). Barry stuck his head out of the room with several packing peanuts stuck in his hair. The room behind him was littered with them along with several shredded pieces of cardboard. His shoes were smoking slightly and his hair was standing up as if he had been struck by lightning (which actually happened to him).

"Must you always fly off the treadmill? I swear we have to patch the wall at least five times a day despite putting a barrier up,' Catlin scowled.

"Hey its not my fault I can run so fast. Plus you could have turned it down when you know I was getting off," he grumbled smoothing his hair down and stamping the smoke off his feet.

Catlin just rolled her eyes at her friend in mockery.

"Anyways is it another Metahuman?" Barry sighed knowing it was pointless to argue with her.

Plus he really did not want to get her angry.

"Um...we are not actually sure. Reports say its a giant dog or something. And it is hurting many people," Cisco a guy with crazy brown hair answered.

"Why don't you just call the dog pound or something," Barry asked sarcastically while leaning against the table.

"What kind of cage can hold something this big?" Dr. Wells pulled open a picture of a fierce looking dog the size of a Sherman Tank on the computer.

The picture was blurry as if the photographer had taken it quickly before fleeing. However there were some details that were apparent; red eyes and large teeth to name a few. Not to mention that it was huge and looked like it did not have any rabies shots recently.

"Okay then...that thing has been eating way to many bones; giant ones laced with steroids," Barry muttered, "And it looks like he hasn't had his shots for a while to. Which is just great considering if I get bit I will have to have my stomach pumped for a month."

"Or it could be a Metadog," Cisco suggested earning him a scowl from Catlin.

"I don't think you will have to get your stomach pumped Barry..." she said cautiously turning to him, "I mean you can't get drunk and you are practically immune to all germs."

Which was kind of a hassle considering he could never call in a sick day after getting the crap beat out of him after fighting a new Metahuman.

"So you want me to run over there, get rid of it, and come back?" Barry asked scratching the back of his head.

"Uh yeah. You're the Flash you know," Cisco smirked.

Barry zipped out of the room sending papers flying everywhere as if they had been blasted by a leaf blower.

"Could he at least walk out of the room before doing that?" Catlin groaned trying to grab one of the pages.

"We should really start back-ordering paper weights..." Cisco added.

Barry ran down the main road at over 600 miles per hour. Windows from cars and buildings were blown out as he ran past them. Which was just great considering he was going to get a chewing out session by his adoptive father Joe after this was over.

"You by-passed the area by ten blocks," Cisco's voice came over the microphone installed into Barry's mask.

He skidded to a stop sending sparks everywhere.

"Oh come on. Every...single...time," Barry panted bending over to catch his breath.

He raced back the way he came. He saw three police officers crouched behind cars with their guns trained on the giant dog. The picture had not exactly gleamed how this thing looked in flesh and blood. This dog was so fierce looking it even made an attacking panther look tame. It towered above everything and its red eyes gleamed with malice. All of a sudden with no warning it leaped towards a squad car. Barry quickly snatched the officer out of the way before he was crushed. The car however became a metal pancake. The officer who Barry just rescued let out a startled yelp when he saw him and fell flat on his back in shock. Barry chose to ignore him. He got this a lot from people he rescued.

"Let's put this thing down!" yelled another cop who apparently hadn't noticed Barry yet.

The officer and his partner fired several shots but the bullets went right through the dog without even hurting it. The bullets struck the wall and trees behind the dog who eyed the officers with contempt. It snarled venomously and took a step forward. Realizing it was time to stop this thing, Barry zipped to a stop right in front of it before it could move again. He heard the police officers (who had finally noticed him) shout in surprise. One of them even dropped his gun he was so surprised.

If Captain Singh saw that the officer would have most defiantly been fired.

"Hey there big boy...how about you just go 'home'...err...to S.T.A.R Labs," Barry soothed trying to disguise his voice by vibrating it.

The dog growled in response and leaped towards him. Barry kept dodging it but the hound was quick; just a snarling black ball of fur with razor sharp teeth and claws like garden shears. Not dangerous at all.

"Um this thing is defiantly not normal!" Barry shouted into his headset.

He ducked as a paw the size of a average car's tire whistled above his head.

"I can tell by the way you are zipping around on the computer screen. This thing must not be normal if it is able to catch up with you," Catlin said.

Realizing that the surrounding civilians could be in danger, Barry delivered a swift kick to the dog's rump; it must have hurt considering he was moving at high speeds when he did it. The dog yelped in pain and charged at him mouth a gape. Barry kept cat-calling it; trying to entice it chasing him. It worked; the hound became very ticked off. Barry managed to slow down his speed (to about 80 miles per hour; that was considered slow to him) that allowed it to keep up with him. He lured it to about five miles away; on top of a bridge.

"This thing is going to chew my head off if you don't tell me how to stop it," Barry panted dodging another paw swipe from the beast.

He was going to have to eat a lot of food to get the glucose he burned up back after this.

"Sweet...never mind scratch that word; I was talking about something else...anyways maybe we can train it if you knock it out," Cisco piped up.

Barry groaned. If that happened then the whole lab was doomed.

"No...we are not going to keep a mutant dog," Catlin scolded.

"Please?"

"NO!"

"Can you both knock it off? I'm about to be dog food and I have no idea how to stop this thing," Barry said annoyed that they were arguing about something as stupid as training a giant dog at the given time.

He picked up speed but a wave of water swept him off his feet. Barry painfully crashed into the side of the bridge at over 400 miles per hour. It was a good thing to because the hound landed where Barry would have been seconds before. The hound had leaped intending to pounce on him. But the water had knocked him to the side; preventing it from succeeding.

"You broke some ribs!" announced Catlin.

"Already know," Barry groaned holding his side.

At least they would be mended within a hour.

"Barry? What happened? You were going in a straight line one minute and the next you were pushed off to the side," Cisco asked.

"A wave of water pushed me to the side," Barry answered annoyed.

The hound turned and growled a lone figure standing on the bridge. It was kid; maybe 18 going on 19. He had jet black hair and piercing sea green eyes. The boy was holding a three foot long sword that glowed faintly. Before Barry could move to get the boy out of harm's way the hound leaped at the boy. Instead of running the other way the boy ran toward it. As the distance shortened between them the boy shouted. Another wave of water roared up over the bridge and shoved the hound back on the ground before it could land. It snarled and shook itself; sending wet dog scented water everywhere. Before it could move the boy trust his sword at the dog. With an unearthly howl it exploded into a giant dust pile coating everything within a three foot radius.

"Barry?" came Catlin's voice uncertainly.

"I think I found another Metahuman," he answered panting clutching his throbbing chest.

The boy ignored him and his sword turned into a small object that he put into his pocket. He crossly kicked at the dust pile and muttered something about not being to go anywhere without being attacked by monsters. That was when he noticed Barry who gave him a small pained smile in return. Stumbling back, the kid rubbed his eyes a few times as if to check to see if he was seeing things. Then he cautiously approached Barry and helped him to his fee before back until he had his back against the bridge. His eyes were wide open and he seemed to be on the verge of a nervous breakdown. Barry could feel his broken ribs mending but it would be some time before they were completely healed.

"Who are you kid?" Barry asked trying to keep his mind off the pain.

The boy shrugged seemingly calming down and replied, "You're welcome for preventing you, 'The Streak'" the kid made air quotations," from being coming a Hellhound treat."

Jeez this kid was sarcastic; and annoying. And why was he using a Greek Mythology term? Hell hounds were Hades' attack dogs...or so the myths said. Barry decided to pretend he didn't hear the Greek term. Oh great...he was going full nerd again.

"Uh...thank you. Are you a Metahuman?" Barry replied trying to ignore the fact the boy called him the annoying nickname he hated so much.

"No," the boy replied swallowing hard, "What the hell does that word even mean Streak?"

Seriously...was the name The Flash that hard to remember? The boy snapped his fingers at Barry and muttered something. He raised an eyebrow and asked,

"What are you doing?"

The boy looked shocked and grumbled under his breath, "Thalia so owes me. She's going to teach me one way or another even if she fries my eyebrows off."

"What are you talking about?" Barry asked trying to make understand why a girl would want to fry someone's (particularly this boy's) eyebrows.

"Nothing. Listen...just forget what you just saw and heard. Please," the boy pleaded.

He turned and stood on the railing. What was he planning?

"Kid wait...I have some friends that help you and..." Barry started to say while taking a step toward him.

"I don't need help," the boy growled.

He then dove off the side of the bridge. The kid was defiantly crazy with a capital C.

"Oh crap," Barry cursed.

He raced down to the river and ran toward the kid (on water). Unfortunately he passed right underneath the boy; it was as if the water was pushing him away from the kid. Before Barry could turn around the boy dove into the water and disappeared beneath the waves. Barry raced back to the shore panting. It was too late. The kid was gone.

"What happened?" Catlin asked.

"The kid jumped from the bridge," Barry answered.

He winced knowing what was coming next.

"WHAT!" said Catin and Cisco in unison.

And there was the ringing in his ears he was expecting.

"Yeah I know...that was a hundred and thirty foot drop. I tried to catch him but couldn't," Barry groaned as his ribs started stinging.

"You do realize you would have broken both your arms if you tried catching him? Terminal velocity. You don't have super strength," Cisco said.

"They would have mended eventually you know,' Barry sighed.

"Then how about this? You would have passed out from the pain and drowned," Cisco said in a smug voice.

"You got me," Barry grumbled begrudgingly.

"Thought so," Cisco said.

"And what about the kid? He would have died if you caught him at the speed you where going," Catlin grumbled.

"How fast was I going?"

"About 750."

Ok then...maybe it was a good thing he didn't catch the kid. He would have become a grease stain; literally. Still Barry could not help but feel guilty for not grabbing this kid before he jumped. He should have realized what he was planning before it happened. That was when he caught sight of a figure across the river. It was the boy. He glanced across the river right at Barry before disappearing into the city. How in the world...?

"You guys are not going to believe this. The kid survived the drop and managed to swim fifty feet to the opposite shore. Really quick to; he made it there at the same time I would have reached it if I ran across," Barry said gasping for air.

As his ribs were mending the pain had grown so great it was getting hard to breath.

"Are you serious?" Cisco asked.

"100%" Barry responded, "Should I go after him?"

If he did go after the kid the kid would not expect a thing. One second he would be headed toward the city; the next he would be at S.T.A.R Labs. To Barry's surprise the least likely person to answer no answered.

"No...let him be. As long as we know he is not a threat we should leave him be," Dr. Wells responded, "Come back to base."

Barry glanced across the river one more time before zipping off. He passed by several cars on the street moving so fast they seemed to be standing still. Seconds later Barry was back at S.T.A.R Labs. He crossly wrung his suit out; creating a puddle of water on the floor.

"First you blow one suit up, the second one became an icicle, and the last one became charcoal. What else are you going to do my suit?" Cisco demanded.

"It is my suit. I wear it," Barry grumbled still wringing the suit out.

"But I created it!" Cisco shot back.

Barry ignored that comment.

"If you are done may I ask, why did you think the kid was a Metahuman?" Catlin asked.

"He could control water; kind of like the Weather Wizard and that tidal wave," Barry responded putting his suit back on, "Never mind, scratch the tidal wave comment."

Barry remembered that the tidal wave incident never 'happened' due to his accidental travel back in time. The whole space time continuum theory gave him a splitting headache.

"Um...he could not control the weather though right?" Cisco asked, "Just wanting to make sure Weather freak didn't escape."

"No...just water," Barry answered, "Judging by the way he was able to fling water over a hundred and thirty foot bridge, he must have complete control over his power."

"Odd...reminds me of a story a while back," Dr. Wells said tapping his chin thoughtfully.

"Which was?" Barry pressed.

"Supposedly there were these two kids in Charleston that used wind and water to create a hurricane to defeat some armed and dangerous men; according to some witnesses. One was blond who controlled lightning/storm; the other had dark hair and he controlled the water. I dismissed it as nonsense then but now..." Dr. Wells trailed off.

Barry felt a chill go down his back. That could have been the boy he saw.

"I heard about that to. But that was before...well you know. So how is it possible?" he said.

He knew Dr. Wells hated people bringing up the S.T.A.R Labs incident that made him paralyzed and made Barry a super fast man who could stop a bullet simply by grabbing it out of the air. Dr. Wells shrugged in response to Barry's question.

"So are these kids good or bad?" Catlin asked.

"Good...assuming that they did that to protect the public," Cisco responded with a shrug.

"What I can't understand is how he knew that Hellhound was going to flatten me. He used the water to push me out of the way," Barry said.

"How he able to see where you were going to go does not make sense. And did you say Hellhound?" Cisco asked, "You mean the monster from Greek Mythology?"

"Yeah..." Barry responded.

He hoped his friends didn't think he was losing it.

"That is weird," Catlin responded, "You don't think...I don't know...he's um...a bit on the loony side?"

Barry had thought the exact same thing that is until he saw the kid survive the fall. No normal person could survive that.

"He seemed pretty sure about it. And he said something about how he was not able to go anywhere without having monsters attack him," he replied.

The computer beeped letting the team know of an armed robbery at a bank three blocks away.

"Got to go!" Barry said quickly.

He zipped out of the room arriving at the bank within seconds. Barry managed to take out the robbers within 3 seconds and left them dazed on the ground for the cops to pick up. Before he could run back to S.T.A.R labs he noticed a couple outside the doors walking down the block. Quietly he ran to the door and opened it. One was a blond hair girl and the other was the kid Barry saw on the bridge. Only this time he was not soaking wet despite being in the water only five minutes before hand. And bizarrely the boy seemed to have a kind of aura around him; kind of like the aura the Barry saw in Metahumans but this one seemed more powerful. The girl had it to; but it was slightly weaker. Barry zipped in front of them; they had not noticed him...yet.

"You are so stupid Seaweed Brain! What if he figures out who you are?" the blond girl scolded punching the boy in the shoulder.

The boy winced and rubbed his shoulder. Barry winced sympathetically. That had to hurt.

"Hey...it does not really matter. He'll probably think I'm crazy," the boy scowled, "And believe me I tried the Mist trick and it didn't..."

The boy caught sight of Barry, stopped talking, and paled. Barry immediately made his facial features vibrate.

"Is that who I think it is? The guy who is able to run faster than the speed of sound" the blond girl asked.

At least she was not calling Barry "The Streak". Barry sensed a nerd question coming up.

"Yep...don't even think about asking him quantum physics question Wise Girl. I already have a head ache from you chewing me out about jumping off the bridge. You should know by now I will not become a pancake if I fall from a great height into the water. I fell from the St. Louis Arch and survived. Plus water heals me an.."the boy was cut off by his girlfriend slapping her hand on his mouth.

Apparently the girl was smart and the boy was well...a glass-half full kind of guy judging by how he wouldn't stop talking; he seemed nervous about something. Both were playing it smart; using nicknames instead of their real names. And how was it humanly possible for not dying when hitting water from that high? Hitting water from a great height was like hitting concert. Barry remembered hearing about someone who fell from the St. Louis Arch a few years back; no way this kid could be that person. And the water healing thing? Couldn't possibly be real. Barry decided to ask the kid about what he said on the bridge.

"Hey kid..." was all Barry was able to say before the boy grabbed his girlfriend's hand and took off running.

Barry shook his head and decided to let them get a head start; knowing he could catch up with them within a millisecond.

"You do realize he can catch us. Physics are broken with this guy," the girl said.

And whole lot of other things were broken to; such as logic to name one.

"Oh shut up Wise Girl! I can make him trip again," the boy responded.

If he was planning to using water to do that, Barry knew he was going to have to use extra speed to avoid a slip up; again.

"They are so stupid..." Barry muttered preparing to chase them.

"Who is stupid?" came Cisco's voice.

"I saw the kid again...and he recognized me. He's running right now with his girlfriend..." Barry trailed off.

"Just let him go..." Dr. Wells sighed.

"But..."

"Just let him go. Listen... if we hear a story about a boy using water for bad things then you can go after him," Dr. Wells said.

Barry zipped back to the lab after staring after the kids regretfully. He quickly explained the discussion to his friends.

"I cannot believe you would not let me go after him," Barry scowled sitting down without his speed suit.

"He probably would have put up quite a fight," Catlin responded.

"He has to be a Metahuman. How else could he survive a drop into the water from a great height? " Cisco said.

"No...it didn't seem like that. He had the same aura Metahumans have but...this seemed to be more powerful," Barry said.

No one could come up with an serious explanation to that. However...

"Maybe his dad was a god or something," Cisco joked, "Like Thor."

"Are you serious? You believe in that comic?" Catlin rolled her eyes.

"Hey! Comic books never lie!" Cisco protested.

They never truly figured out who the kid really was until. Little did they know Cisco had guessed right and if the truth was found out...the idea of a higher being would be proved to be true. Which was a good thing they did not make a bet with him.

Done...another one shot. Hope you guys liked it! Oh and yes...Annabeth was totally being interested in physics/science and Percy being annoyed with the whole deal. Anyways R&R!