Summary: If a Dark Lord with eons of experience attacks you, maybe what you need is an extraterrestrial ally. When Ben Tennyson arrives and saves Harry from Voldemort in the graveyard, the magical world is shocked. Now, with Ben's help, can Harry become the Hero he was meant to be? AU.
Violent orbs of purple magic flew through the air to impact in a magenta shield. The silver haired enchantress was tired, but was trying not to show it.
"Seriously, Charmcaster, is this the best that you can do? You have gotten sloppier since our last meeting." Taunted Gwen, the anodite cousin of Ben Tennyson, who was the wielder of the Omnitrix.
"You had us at a disadvantage. Nice job getting me to use up my battery during the brawl with your golems and sending Kevin away on a false call. But you should have remembered that my cousin is much stronger than you in magic before engaging in this duel." Came the calm voice of the black haired teen, Ben Tennyson.
Charmcaster was already angry, but this pushed her over the age. This wasn't fair. She was an inhabitant of Ledgerdomain, the realm of magic, and had practiced all her life to be a great enchantress, when this upstart part-alien had outclassed her without any difficulty or practice. With a sinister smile, she attempted the same spell her father Spellbinder had used to send her to Earth: "Dimento Portus Eratico".
Gwen's eyes widened as she realised what the spell could do. She instantly manifested a shield around herself, but was shocked to realize she wasn't the target, but rather...Ben was. Before she could do anything, Ben Tennyson disappeared through the portal into an unknown world.
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"Why does this always happen to me?" whined Ben as he took in his surroundings. He was in a graveyard of sorts. However, there were voices coming from distance. Hoping to understand where he was at, Ben tiptoed towards the clearing. However, what he saw there instantly warned him something was very wrong.
He watched as a rat-like man draw some blood from a teen tied to a gravestone and drop it into a boiling cauldron, summoning his master from death. A man rose up with snake-like nostrils and red eyes. He conjured a silver hand for his servant and somehow summoned his other followers there. Ben was impressed by their teleportation. Suddenly, with a clicking noise, the Omnitrix faceplate turned green, showing that it was ready to go.
"Finally. What took you so long?" exclaimed Ben.
"Reboot was delayed due to a change in dimensions and due to the area being saturated with excessive magic." Came the robotic reply from the alien watch.
Ben was shocked. So he had crossed dimensions...well, Gwen had gotten him out of Null Void earlier, so the situation couldn't be too bad, could it be?
He was suddenly forced to look up due to a horrific scream. The youth was rolling on the ground with agony while the onlookers were laughing. Ben clenched his fists. He didn't know what was going on, but it was very wrong. He realised that the teen had somehow destroyed the man with his magic earlier and the man now wanted to avenge his defeat. He learned that the man was someone called "The Dark Lord Voldemort" and was like this dimension's Vilgax from his rant. Ben was impressed when the teen was challenged to a fight to death and he stood defiant with his wand raised; the boy's posture stated that if he was going down, he would go down fighting. Ben raised the faceplate of the Omnitrix; it was Hero Time.
A green light suddenly filled the entire surrounding area. Instinctively, all the assembled death eaters covered their eyes and ducked, but Harry stood with his eyes locked on Voldemort. This light had brought him only sorrows earlier; could this time be different?
"Big Chill!" exclaimed the moth-like blue alien as he stretched his wings. Immediately the people started chattering their teeth as his cryokinetic abilities chilled the area, not sinisterly like dementors, but with the same effect. "You people are all going up against one kid. How is it fair? Try taking on someone like me." With a gust of his freeze breath, two death eaters changed into a lump of ice.
"Attack!" Ordered Voldemort, with his own wand pointed. Several cries of "Reducto" and "Incarcerous" were heard. Big Chill just smirked as he turned intangible and the spells flew harmlessly through him. The death eaters were shocked: How can this be possible?
"It's a ghost!" Someone suddenly screamed.
"No, I am much too handsome to die so easily. However, I have a magic trick for you: Now you see me, now you don't." The alien turned invisible at will and phased through the rank of death eaters. Before they could realise what was going on, they started to turn into icy statues.
Voldemort sneered. Invisibility was no defence against a wizard of his calibre. He indicated Jugson to engage Potter for the time being and tried to locate this new threat. It was easy to locate his energy. The heat lines left by him, however were blue rather than yellow. Voldemort raised his yew wand and screamed, "Avada Kedavra".
Big Chill noticed the green death spell flying towards him and instinctively realised this wasn't something he could dodge or let it pass through him; his plasma state made it so that there were extremely few molecules of his body in an unit area and that was enough to bind his sentience to his body, while not allowing his body to feel any pain due to damage to just those few cells. However, he was loath to let this spell touch any part of his body. With precision, he instantly phased through the ground as the spell passed harmlessly above him.
Voldemort snarled at his missed spell and uttered a blasting curse to draw out his underground enemy. Before it had even hit, the ground shattered as Big Chill rose up in a large shard of ice that his spell just chipped at.
"What now, Voldemort? Think you can break this? Or do you have cold feet?" Big Chill taunted in his obvious ice-pun.
Voldemort was shocked; this creature spoke about him without any fear? This couldn't stand. With "Incendio Solem", the ice shard was blasted by a fire with the sun's force. Big Chill immediately flew up and thanked his heat resistance, enough to survive the heat of lave, which certainly was unusual for an ice alien. As he blew another gust of ice wind, Voldemort countered it with a blast of warm air and fired an overpowered cannon blast charm. The sound stunned Big Chill as he lost focus for once. That was enough for the Dark Lord as he fired a flesh eating curse at Big Chill. It clipped him in the shoulder as Big Chill dropped to the ground in pain and reverted to normal.
Voldemort looked at Ben, shocked: Another fifteen year old kid had tried to stand against him and almost taken out his whole team? Before he could fire another curse and finish him, suddenly he grunted in pain as a reductor curse struck him in his back. If not for his newly created body which was a construct of pure magic and had much more resistance to spells, it would have seriously hurt him. He spun around to see the Boy-Who-Lived in front of him, brandishing his wand, his green eyes blazing. Jugson was sprawled on the ground, obviously stunned. Voldemort was impressed, but decided to end this quick. With a simple motion, he summoned a grave stone in front of an incoming stunner and led the vines on the ground crawl up and securely bind Harry Potter. Voldemort smirked triumphantly: Now, it was the time for the Boy-Who-Lived to die. He uttered his favourite spell again as the green light raced towards Harry.
Another green flash diverted his attention as he cursed himself for leaving his other opponent alone. Ben had used the opportunity and slammed his hand on the Omnitrix again, hoping for Echo Echo. However, typically, the Omnitrix suffered from an accidental transformation.
"Jet Ray!" The manta-ray like aerophibian shouted out his identity and took to the air in a speed unseen by human eyes. It was a race between the spell and Jet Ray, which he won with ease and pulled Ben to the air in the blink of an eye, just before the spell killed the vines that were holding Harry captive.
"Who are you?" asked Harry, curious. He had no hope of survival today before this stranger had arrived and engaged Voldemort for quite some time and taken out the other death eaters were surprising ease. Understandably, he was curious.
"No time to explain." Jet Ray quipped, as he dodged the incoming spells with his natural agility. "I am not used to flying with passengers, and they are breaking out of their ice prison." It was true. More and more wands were joining the battle, with Voldemort leading them on. It was only a matter of time before they would be hit. "We got to get out of here. Any ideas?" Jet Ray asked, hopefully.
Harry nodded, "The Triwizard Cup was a portkey. It brought me here. If I can summon it to me, we might be able to return to safety, but I would need a little cover."
Ben didn't understand half of what Harry was speaking, but he nodded, "Okay, on the count of three." Before Harry could agree, Ben shouted, "Three!" and let go of Harry in a freefall. He scrunched up his eyes and his tail lit up in a green glow. "Okay, suckers...take this." With the energy blast that could propel him through space faster than a rocked engine, Jet Ray instantly destroyed a good area of the ground and most of them were thrown to the earth by the force of the blast, Voldemort included. As the dust covered the area, Jet Ray flew downwards in a fluid motion and caught Harry. "Now!" He screamed.
As Harry was in freefall, he realised something; this guy was absolutely nuts and was at least as crazy as he was and secondly, this was WAY better than quidditch. However, he focussed on his magic as Jet Ray caught him and screamed, "Accio Cup." As they took hold of their trophy, they disappeared from the graveyard, leaving a team of very dusty and scorched death eaters behind.
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As the two teens (Ben had somehow reverted back to normal during the course of the journey) landed on Hogwarts grounds, a great cheer went from the crowds. Cedric was in the forefront as he shouted, "He is back. Headmaster, thank goodness that he his back." Instantly, a bushy haired girl tore from among the crowds and embraced Harry in a bone crushing hug, probably not even noticing Ben. He was amused at her reaction and thought in his mind, "Harry's cousin? Nah, couldn't be...His girlfriend? Probably".
"Who are you?" Came the enquiry from another voice. Ben looked up to see an old man with an extremely long beard and half-moon spectacles enquiring him. "I am Ben Tennyson from Bellwood, in USA." Ben hoped that at least there was a USA in this dimension.
"American? How are..." Dumbledore's quarry was interrupted by Hermione's scream , "Professor Dumbledore. Harry...Harry just lost consciousness...He isn't responding."
Instantly Ben smacked himself. How could he be so stupid? "He needs some medical aid. He was put under some kind of spell what caused him, from his body language, unimaginable pain. Something like 'Crucio'".
Ben saw the horrified looks on everyone's eyes, specially the girl's who cradled Harry's head in her lap and muttered, "Oh, Harry, why does this happen to only you?" Instantly there was a great hustle-bustle as Harry was levitated into a stretcher and taken inside the castle. Dumbledore excused himself and told someone named "Professor Moody" to handle his interrogation. With his signal, Ben marched into the castle and shrugged to himself: This was a very weird day, even by his standards. He travelled through dimensions, entered a world where no one knew him, met people who could do magic as easily as Gwen or Charmcaster, saved a teen Hero like himself (why can't adults be Heroes?) from death and was now going to be interrogated himself. Everything was just peachy.
Even if his interrogator lacked an eye and a leg.
A/N: This is something I wanted to do for a very long time. To make clear about the timeline: This is in Alien Force, and initially only the original 10 aliens of aliens of Alien Force are going to be used (well, maybe not Alien X). Gwen or Kevin will not feature largely, but some other Ben 10 characters will play some part. For the HP universe, Cedric didn't take the portkey alongside Harry; there were no near death situations where they saved each other...Harry just beat Cedric, but he watched him take the Cup and disappear. Oh, and Luna became a friend during this year in my story, and not in year five.
So, now review and tell me how I did.