I received a review complaining about how OP Harry is...but to that person, I reply that Ben 10 is overpowered already. The only reason he isn't actually overpowered in the fact that he doesn't take anything seriously and always screws around.

Any new transformations you've never seen I either googled...or I took from my favorite YouTuber the ink tank. Dudes big on ben 10 stuff and made a sequel to the series called five years later. It's pretty good, I recommend Check it out.

Though anyone has ideas for new aliens I'm open to seeing them.

Btw, just so you know...I'm currently trying to avoid using humungousaur, don't know if anyone noticed but Ben almost always tried for him and it the hell out of me so sorry if you don't like that, though to make up for it I'm going to have Harry take more advantage of scan/capture mode than ben ever did.

I don't own Harry Potter or Ben 10

Harry leaned against a rock as Gwen was rotating a laser lance that Kenna had saved as a souvenir, "magic is Mana Gwen, and Mana flows through every living thing. Even if they can't harvest it. Magic tends to leave traces no matter how subtle if you can isolate it you can trace the past owners of an item."

Gwen concentrated harder and smiled as she did feel the slight traces of magic on the laser lance, "I found it."

"Good, now use that magic to lead us to them." Harry grinned as he climbed into the car with Kenna, "she'll lead us to the aliens."

Gwen landed near an old mine shaft, "this is it. "

Harry frowned at the man standing guard at the entrance, it was harder to tell in his human form, but he could definitely feel the distortion of the mana in the air around the man, "alright. We need to….." he paused as Kenna grabbed the guy and slammed his head straight into the metal frame of the elevator.

"Kenna! You didn't need to hit him so hard." Gwen frowned.

Harry sighed and knelt down, "it's fine Gwen." He pulled the mask off revealing an Alien.

"Oh…." Gwen frowned, "how'd you know?"

"It's a special trick I learned back in school Gwen…kind of an off shoot of Occlumency, instead of blocking your mind off you project it out. That way anyone who tries to read your mind won't know what they're looking at, and it allows me to feel the mana all around us much more than usual." Harry explained

Gwen frowned but accepted the explanation, she remembered how much he had struggled with Occlumency back then. The memories he had of his biological aunt and uncle were too much for him to handle and he'd just shut down, "you are so showing me that later." She said.

Harry shrugged as and turned around, "how are we going to get in there…" he frowned.

"We could always use a disillusion," Gwen said.

Harry shook his head, "we have no idea how these things see Gwen. That'd work against a human most of the time, but aliens are another story."

"We could use their tricks against them." Kenna picked up the mask, "if we programmed it right one of us could look exactly like them."

Harry grinned and nodded, "All alright." he placed the mask on, and in a flash, he was an alien.

Gwen drove a mine cart towards them, "get in."

"Why?" Kenna asked confused.

"How else are all of us supposed to get in there Kenna?" Harry sighed, almost wishing he could roll his eyes in this form.

Harry parked the cart in an out of use tunnel and took off the mask.

"Max has to be here," Harry said as he peeked around a corner.

"Let me try something..." Gwen said as her eyes began to glow.

"How aren't you two cold?! It's freezing in here." Kenna said rubbing her arms for warmth.

Harry cleared his throat and using every bit of occlumency training he could use held back the blush that threatened to form from what Kenna was unintentionally doing to her chest, "sorry. Here" he pointed at her.

Kenna blinked in surprise as warmth began to spread through her body, "how did you..."

"Short answer is magic is real Kenna. A portion of humans are born with the ability to harness it and sometime in the last thousand years they invented the warming charm." Harry said.

Kenna was about to scoff at the thought of magic existing, but Gwen blinked and sighed, "sorry Harry. The traces of grandpa max are weeks old now."

Harry sighed and ran his hand through his hair, "so what now? We get out of here?"

"No Kenna. Whatever is going on here they are distributing dangerous weapons and altering human DNA. We have to stop it." Harry said, Gwen, nodded and led the way since she knew the layout of the ship from her scan for her grandfather.

Entering into what had to be the cockpit they began looking around, Kenna found a door and used the metal to pry it open, "over here." she called out.

Gwen and Harry ran over and started at the walls lined with weapons, "Gwen."

She nodded and pink lightning shot out of her hands, destroying all the weapons.

"Little loud don't you think? You could've just vanished them." Harry groaned.

"Don't be such a downer Tennyson. We'll be out of here before they..." she was interrupted by one of those aliens that had just entered the room.

"You were saying?" Harry said sarcastically as more aliens began to flood into the room, in a flash of light Harry was replaced by a plant-like alien that has an overall green and black colored body, "swamp fire!"

Gwen wrinkled her nose as Harry's new aliens smell made itself known, "I hope this alien does more than stink Harry."

Kenna grinned, "better than that Red!Thats a methanosian. They can generate heat! I see where you're going Tennyson." she knelt and absorbed the metal of the ship as Harry's palms began glowing.

Gwen's eyes widened as heat began to fill the room, "of course! These aliens need cold, and if exposed to enough heat they should weaken." Her palms began glowing, "have I ever told you that I love it when you use your head Harry." she grinned as she sent a blast towards the nearest alien.

Kenna smirked as she punched an alien so hard he went flying into the red tank hanging above them, "these things really don't like heat. They're much easier than before."

Harry chuckled and launched a fireball towards a group that was charging towards them, but was interrupted from replying when a taller white alien stepped through the door, "what are you creatures doing on my ship?!"

"That must be the leader," Harry said.

Kenna expanded the metal around her arms and smirked, "lets kick it's butt."

"I do not repeat myself to lower life forms."

Harry narrowed his eyes, "this guy reminds me of some of those 'pure blood' magicals we ran into when we were kids."

Gwen clenched her fists as her magic flared, she remembered that. Pureblood supremacy ruled in magical Britain, and she had a first-hand experience when several of the 'forced' death eaters had attacked them. They treated grandpa max like dirt, and several things they said implied that she was better served on her hands and knees, "you know, I think I agree with Kenna. Let's give this thing a beat down." she launched a volley of pink blasts as Harry and Kenna ran in to physically attack it.

The alien didn't seem at all phased by Gwen's blasts, and easily caught Kenna's punch, "pathetic lifeforms. You dare defile me with your attacks" he picked Kenna and threw her at Gwen, then backhanded Harry who went flying as he was encased in green light and returned to his human form crashing into the wall, "by discovering this place you set us back by months! Now I have to sterilize this whole area."

"Sterilize?!" Gwen gasped, "you can't!"

"I can and I will. Now get off my ship" he grabbed the two and threw them off.

"You know. I tend to be biased..." he turned to the last human on his ship, "but bad things tend to happen if you don't Listen to Gwen."

Alien DNA file captured, new transformation avaiable.

Harry smirked, "really should've watched where you hit me." He activated the omnitrix.

In a flash of light he was seeing another high breed, "blasphemy. You dare take the form of your superior?!" He charged forward to punch the fake, but was surprised as his punch was stopped easily.

A distorted chuckled came out of him, "let's test drive broodwing here." Harry raised his other hand and the ends of his fingers launched out in a rapid fire volley, right into the highbreeds face.

"Ah!" the alien flinched back and Harry punched him in the face.

Kenna stared stunned as Harry traded blows with the alien, "if Tennyson could turn into one of those things why didn't he do that in the first place?!"

Gwen frowned, "I dont think he could. Now that I think about it, that aliens attack hit Harry right on the Omnitrix symbol. He must have gotten the DNA sample...it happened a few times when we were kids."

"Wait! You're saying he can unlock new forms by simply letting aliens touch the Omnitrix?" Kenna asked stunned, that sounded suspiciously close to her abilities...without the drawbacks.

Gwen nodded, "yes. But later Kenna. How do we shut this ship down?"

Kenna pointed to the large red tank, "that would be the power source. At least for the weapons systems."

Harry flipped over the high breed, now that he was the alien he had a general idea of what this thing was, and came down with a foot to the back of its head, but the highbreed seemed unfazed as he turned around and grabbed Harry by the throat...or what equaled the throat in this form, "putrid filth. I should kill you where you stand for daring to take on the traits of my kind."

Harry screamed as he was thrown out of the ship, but a pink beam latched onto him and stopped his momentum, "thanks Gwen." he said as he landed, "we have to stop the ship!"

"Relax Tennyson. Gwen and I took care of it." Kenna smirked as the ship began to boot up.

Harry stared as electricity began sparking all over the ship, "hit the deck!" He cried out.

"Oh no! It was just supposed to stop him from taking off." Gwen encased them in a barrrier as the ship exploded.

Kenna grunted and shook her head, "whatever was in that tank was way advanced. Knowing aliens like this they'd rather destroy it than allow anything else use it. So there would be no safeguards."

Harry was encased in light and returned to his human form watching the flames die down, "no...this is probably for the best. If they were anything like the purebloods, he would've just came back or found another way to kill bell woods population." he turned to his friends, "but this isn't over. One alien couldn't have done all of this alone. Something bigger is happening."

"It'll be just like old times." Gwen smiled.

"Kenna...i know that after everything that happened between us I have no right to ask this, but we could really use your help."

Kenna swallowed heavily but stared at the wreckage of the alien ship, mind drifting to her father. He had been a plumber...the one good thing in her life she looked up to after she ran from her mom when she has accidentally blown up their home. He wouldve jumped right in to help, "im in. I made a promise, and I will keep it."

Harry grinned and held his hand out, Gwen placing hers ontop and Kenna on top of hers, none of them even noticing a pair of violet eyes watching them from afar, narrowed at the redhead, scowling at the ravennette...but a look of longing rose as she stared at the only boy of the group before she vanished in a purple light.

Appearing back into an apartment she sighed and waved her hand as a book came flying towards her, for a second she hesitated but looked towards a couple of pictures, one of her and her father, and the other of a family of three, her eyes hardened and she opened the book, "ill get you back..."