Author's note: Hey everyone, FireSlash here and welcome to another chapter of Lincoln Loud: Alien Hero. Before we start, there are some things I'd like to say. First off, thanks for all the support for this story, it means a lot. Second, if you like this fic, I suggest checking out the rest of my Loud House fics. I'll even be making a Loud House/ Xenoblade Chronicles one in the future. Or I might make a Loud House/Captain Universe fic. I don't know yet. Let me know in the comments which one you'd rather see. The losing one will still be written, but only when I complete one of my other fanfics. Anyways, the third thing I want to tell you is that I'll be starting college on Monday (which I'm so excited about. High School was crap), so updates will be slower for all my stories. Sorry :-|. Finally, I'm not sure if you've noticed yet, but Lincoln has been using his aliens for a lot of menial tasks. Before anyone expresses their annoyance by such a thing, it's something I plan on having Lincoln overcome in the future. Don't worry about that.

Now that I've said what I've had to, let's get to the story. Review and enjoy :-)

0000

The day after Lincoln had fought Dr. Amino, he decided to head to the abandoned warehouse. In his hands were a notebook and a pencil while a backpack was hanging from his back. Humming to himself as he walked to his destination, the boy eventually stopped, noticing his 'audience' has returned.

"Hey everyone, nice to see you again," Lincoln greeted, continuing his walk. "I'm just heading to the warehouse again. This time though, I don't plan on training."

Briefly flashing his notebook and pencil, the boy smiled. "I'm going there to get some peace and quiet. The Loud House is someplace where such a luxury doesn't exist. Why do I want to be alone? Don't tell anyone, but I'm thinking about doing something big."

Arriving at the warehouse, Lincoln climbed over the fence separating it from the outside world. "You know how my room's just a big closet, right? Well, if I want to keep my hero stuff a secret, I'll need somewhere where I won't get interrupted by the rest of my family. The last thing I want is for them to walk in and find clues that'll spoil my secret."

"I even had to carry this here with me just so no one would find it while I'm gone." Taking off his backpack, Lincoln pulled out the destroyed transmodulator left behind when Dr. Amino was arrested. "That's all going to change though. You see, I want to build a room under my house where I can do my business and store my stuff without having to worry about being discovered all the time. It's going to be like my own secret laboratory, how cool is that?! Now, you might be wondering how I'm going to do this. I've got to build the thing, make sure it doesn't affect the rest of the house in any way, hide it, convince my mom to let me build the place, and design the room at the same time. This might be a problem for most, but not Brainstorm. He's smart enough to do all that, the only thing he'll struggle with is physically building the room himself. Lucky for me, I have another alien I can use to do that...but there is a problem with him. He's impulsive and unstable, even more so than Rath, hence why I haven't shown him to you guys yet."

Dropping all his things on the ground, Lincoln began activating his Omnitrix. Pressing the button, he began twisting the space watch's face until it displayed Brainstorm's silhouette. He then slammed the face down, transforming himself into Brainstorm.

Flashing the audience a confident smile, the alien shot a small, light yellow bolt of energy at the notebook and pencil. His eyes then began glowing as he caused the two objects to float towards him. "Shall we proceed?"

0000

With the aid of Brainstorm, the process ended up only taking less than a minute, allowing the boy to get some training done with him before the Omnitrix timed out.

'Seriously, super intellect is so OP,' Lincoln thought to himself as he stretched his back. 'It's almost as good as XLR8's superspeed.'

Now done with what he had to do, the boy decided to make his way to Flip's Food and Fuel, a place that was a mixture of a diner, grocery store, and a gas station. He wanted to grab something to eat. 'Hopefully I won't run into another hostage situation.'

Thankfully, Lincoln got his wish, for when he entered the store, nothing was out of the ordinary. Strolling over to the counter, he began ordering.

"Hey Flip, can I get a burger?" Lincoln asked the old man behind the counter, the same man who owned Flip's Food and Fuel.

The man let out a small gruff before looking at Lincoln. "That'll be ten bucks."

"TEN BUCKS!? What happened to them only costing eight?"

"We switched to organic meat," Flip told him, causing the boy to frown. Flip was possibly the town's biggest swindler, so Lincoln should've seen this coming. Mumbling under his breath, Lincoln begrudgingly handed the man the money, much to the shop owner's pleasure. "Thanks for your business."

Receiving what he paid for, the boy made his way to a nearby table. Sitting down, he began digging into his overpriced food. For the most part, everything was peaceful...

"In other news, an alien attack has occurred today," A newscaster said, causing Lincoln to turn his attention towards one of the various television screens Flip had installed in his store. So much for things being peaceful. "The target this time was a local pawn shop. Ten people were kidnapped, the only survivor being the store's manager. What they stole? Some greenish crystal the manager claims was given to him a few days ago. We have some footage of the attack caught by one of the security cameras in the store, let's have a look."

The screen then displayed the footage of the incident. Watching it, Lincoln paid close attention to the aliens, recognizing them as the ones he had caught with the Forever Knights and the ones who helped Dr. Amino with his crazy mutation machine.

'What do they want?' Lincoln thought to himself. 'And what was that crystal? If it's so important that the aliens want it, why was it at a pawn shop?'

Continuing to eat, Lincoln managed to come up with two possible answers. Either the crystal fell from space in a similar way the Omnitrix did or some irresponsible plumber found the thing on some planet and decided to sell it without realizing it could possibly be something more than a simple space crystal. As for why the aliens stole it, Lincoln has watched enough sci-fi movies to know it was probably needed for some sort of diabolical plan.

*Buzz*

Checking his phone, Lincoln noticed that Albert had just sent him a message.

'You saw the news yet kiddo? If you haven't, make sure to do so as quickly as you can. It involves the DNAliens,' it read, DNAliens being the codename recently given to them by the Plumbers to identify their species until they could get their official names.

'Yeah, I did. What's the plan?' Lincoln responded.

'Kiddo, I just found out about this today, there's no way I'm going to have one right now. Meet me at the hotel and we'll create one there.'

'Alright, see you in a bit.'

Shoving his phone back into his pocket, Lincoln stood up from his seat and began leaving the store.

"Looks like I'll have to save building my dream room for later," Lincoln mumbled to himself as he looked for a place he could transform into an alien without being caught. Spotting an alleyway, the boy went into it before activating the Omnitrix. "I've got some aliens to hunt."

0000

Using XLR8, the boy managed to drop off the blueprints and proposal he made as Brainstorm for his mother to review before heading to the hotel. With the whole ordeal only taking a few seconds due to the alien's superspeed, Lincoln chose to lounge around the hotel a bit until his grandfather arrived. Taking some time to explore the place a bit, he was surprised on how well the place hid its ties to the Plumbers. The hotel appeared to function like a regular two star place when serving the public. Too bad he couldn't just buy one of the Plumber rooms once he earned enough money from being a junior Plumber…

Finished with his exploration, the boy sat on one of the hotel's couches, waiting for Albert to arrive. Two minutes later, the old man entered the building.

"Hey pop-pop," Lincoln greeted.

"Hey kiddo, hope I didn't make you wait too long."

Lincoln chuckled. "I did have to wait a bit, but that was XLR8's fault."

"Kineceleran are some of the fastest beings in the universe," Albert stated, Kineceleran being the name of XLR8's species.

"Hey pop-pop, are there any aliens faster than XLR8's kind?"

Albert nodded. "Aerophibian are much faster than any Kineceleran. Kineceleran can run about 500 miles per hour, but an Aerophibian can move the speed of light."

"Speed of light? Wow, I hope I make enemies with them."

"You don't need to worry about that. Most of them never leave their home planet."

"Whew."

0000

When the two finished their conversation, Albert brought a room for the two of them to talk in secret. Upon teleporting into said room, Lincoln sat down on the room's couch, ready for business. "So, have any plans for catching those DNAliens?"

"Hm...at the moment, no. We know too little about them…"

Lincoln put his hand on his chin, trying to recall all he knew about the strange aliens. Maybe he knew something that could help them. "Well, they stole that strange crystal, work with the Forever Knights, and have those strange masks that can change their appearance…"

"You never told me about any masks before," Albert informed the boy.

"Really? Sorry. When I first fought them, they looked like regular people until they ripped off their face masks."

"...Sounds to me like they managed to grab their hands on some ID Masks."

"ID Masks?"

"They're high tech masks that allow someone to look like any sentinel creature they want."

"Oh."

"Oh indeed. With the ID Masks, they can walk amongst us without anyone knowing. Looks like they're more dangerous than I initially thought."

Lincoln shuddered upon hearing this. Though they didn't seem like they were much of a threat to him, the fact anyone could be a DNAlien was definitely scary. It meant he would have to keep his guard up if he wanted to stop them. "Do you know what that crystal they stole was?"

"What they stole was a piece of taydenite," Albert told Lincoln. "The crystal's one of the most valuable materials on Earth. Most use it as a form of currency, but it can also be used as an energy source or constructed to be part of a weapon. It's the hardest metal known throughout the universe."

"Well, if they're using stuff like the ID Mask, I think we can say they're going to use it as an energy source," Lincoln stated, his grandfather nodding in agreement. "We just have to find where they're hiding."

"I'll be on the lookout for any place which may seem like an alien hiding spot," Albert said. "They probably have several secret bases hidden by cloaking devices."

"What should I do?"

"Keep up your nightly patrols. There might be some more DNAliens around that need to be stopped. I'll let you know when I find something and we'll go from there."

"Ok."

0000

It was now evening and Lincoln was preparing to head out to fight crime. Before he did so, he decided to make a pitstop to his parents room. Checking inside, he noticed his mom was inside, relaxing.

"Hey mom, can I come in?" Lincoln asked.

"Sure sweety," His mother said. "What's the matter?"

"I was just wondering if you got the papers I sent you."

"I have, but I'm still deciding," Rita replied. "Though Brainstorm has convinced me the room wouldn't be a problem, it's the other alien that bothers me."

"Dang it."

"Tell you what. If you can find a way to control him, then I'll give you full permission to build your little hideout."

Though Lincoln wanted to complain, he knew he had no reason to do so. His mother's demands were quite reasonable and he was no longer a kid. "Alright. I'm going to head out now. Love you."

"Love you too."

Wasting no time, the boy flew out the house, not aware that Lucy noticed him doing so. Having seen that he was in his mom's room earlier, she decided to ask her mom some questions.

"Mother," the girl greeted, causing the woman to jump up five feet in fright.

"GAH! Oh, it's just you," Rita said with a small laugh. "Is something wrong?"

"Have you noticed Lincoln's been acting strange recently," Lucy told her, causing Rita to mentally panic, trying to think of a lie she could tell her daughter. "Do you know anything about why this is?"

"Sorry sweetheart, but I haven't noticed anything strange with your brother."

"He just left the house."

Crap, she was running out of things to say. "He has something he does at night. Don't worry though, he's not doing anything dangerous."

"So you have noticed. Why did you lie to me?"

"Listen Lucy, what your brother's doing is very important to him," Rita informed her daughter. "Lincoln made me promise not to tell any of you."

"But why?" If it wasn't for her bangs, Rita would've noticed the hint of sadness in her eyes. The eight year old was unable to comprehend why Lincoln was hiding things from her. Were the two of them really not as close as she hoped they were?

"He said it was something personal. Sorry, but I'm not going to go against his wishes. But like I said before, he's safe. He's not doing anything bad."

Nodding, Lucy said a quick 'ok' before leaving her mother's room.

"Hey Luce, is everything ok?" Lynn asked as he saw her sister enter their room, her head down. Whenever the little girl was feeling down, it was easier for the rest of her family to notice her presence.

"Sigh."

Walking towards the goth, Lynn began waving her hand in his face. "Uh, Earth to Luce?"

"Huh? Oh, it's just you Lynn."

"You ok?" Lynn asked again.

Lucy shook her head. "Mom knows what Lincoln's doing at night."

"She does?" Lynn asked, shocked. Even though they were all close to their parents, each of the siblings trusted one another more for the most part when it came to keeping secrets. As such, this came as a surprise for the athlete.

"Yes, and she said Lincoln told her not to tell us."

"But why? I thought he trusted us. Well, maybe not Lola, but the rest of us? We tell each other personal stuff at the secret sibling meeting all the time."

"I've been thinking, and I've realized he doesn't trust him as much as we do with him."

"Huh?"

"When he was getting picked on by Ronnie Ann, he tried his best to hide it from us."

"Well yeah, but-"

"And remember when he used to have a crush on Christina? The only reason we knew about that was because he accidently let it slip out. Now, he's doing something in secret. If he really trusted us, then he would have told one of us instead of mom."

"...Man, you're right," Lynn said, taking a seat next to her sister. "What do we do?"

"How about we have a sibling meeting?" Lucy suggested. "Maybe we can think of a way to help Lincoln trust us more…"

"You know, that's not a bad idea. Let's do it!"

0000

"So, what's this meeting about?" Lori asked Lynn and Lucy. After deciding to host a sibling meeting, the two chose to do so as quickly as they could, hence why everyone was gathered in Lori's room. "I literally have to text Bobby soon."

"It's about Lincoln," Lucy said, managing to catch everyone's attention.

"What about him?" Lana asked.

"What else?" Lynn answered, rolling her eyes. A second later, Lucy continued speaking.

"As you all know, Lincoln's been disappearing at night and locking himself in his room. Well, earlier today, I saw him leave mom and dad's room before heading out. I asked mom if she knew anything, and it turns out she knows exactly what he's doing."

"So? What's our bro been doing?" Luna asked.

"...She wouldn't tell me. She said Lincoln asked her to keep it a secret from us."

Hearing this caused all the girls' eyes to widen.

"That's, like, super weird," Leni stated. "I thought Lincy trusted us."

Lynn shook her head. "Yeah, Luce and I have been doing some thinking, and we've come to the conclusion he doesn't really trust us. He's actually hid quite a lot from us"

"May I be excused for a second?" Lisa asked her siblings. "I have realized something of importance has come up."

"What could be more important than helping out your only brother?" Luan questioned the young girl, somewhat angry that Lisa didn't seem to care much about what was going on.

"It is related to Lincoln," Lisa answered. "There is something I wish to fetch."

"Alright, just make it quick," Lori answered. Giving her oldest sister a thankful nod, Lisa left the room. About two minutes later, the young genius returned with a small folder.

Lisa dropped the folder in front of her siblings. "Apologies for the interruption, but I do believe it was time to show you something. The contents in this folder may surprise you."

Lori opened the folder and upon seeing what was inside, gave the genius a confused glance. "Uh, the new Sister Fight Protocol? What does this have to do with anything?"

"Look at the material behind it."

Doing what she was told, Lori began going through the folder, all while her sisters followed along. "Lisa, you realize none of us can read you sciency stuff, right?"

"While I understand none of you have the mental capacity to understand my work, I must admit I'm not the author of this brilliant masterpiece."

"What is all this stuff anyways?" Lola asked.

"All the possible factors that went into creating the new Sister Fight Protocol. At least, I confirm that's the case for the parts of the blueprints I can understand.

All the sisters gasped upon hearing this. Lisa not understanding something? That was unheard of in the Loud House.

Lori gave her sister a look of astonishment. "So...if this isn't yours, then whose is it?"

"Do you not recognize the handwriting of our own brother?"

"This stuff's Lincoln's?" Luna questioned.

"Indeed. It appears our brother's a closeted genius, one who's mental prowess surpasses even my own."

The Loud House went silent all of a sudden. Though Lincoln was smart for his age, the fact he was a supergenius in hiding was a bit too much for them to comprehend. Eventually, Lynn decided to break said silence.

"Are you sure he's a genius? His grades while good aren't anything near Clyde's or yours."

"I understand how that might be confusing to you," Lisa stated. "But he could've simply been hiding his superior intellect from us, purposefully making his grades the way they are so we wouldn't suspect a thing."

Lana frowned. "But why would he want to hide this from us?''

"Being an individual of great intellect is not as easy as it seems," Lisa told her. "We are often bombarded with the questions of the lesser intellectuals around us and we are expected to solve their issues." Everyone rolled their eyes at this. "He most likely knew about such things and as such, chose to not tell us to avoid such pointless duties."

"So what now?" Luan asked. "Our brother's an egghead now and you have to admit, this is pretty egg-citing. Haha, get it?"

Everyone simply rolled their eyes, Lola speaking shortly afterwards. "I say we blackmail him."

"That is another reason Lincoln did not tell us his secret," Lisa informed her, glaring at the pageant queen. "He knew the chances of one of us blackmailing him. Hm...now that I think about it, Lincoln may have the ability to escape such a fate."

"Look, that doesn't matter right now," Luna spoke. "We should be focusing on how to get his trust."

"How do we, like, do that?" Leni questoned.

"Earning the trust of male sibling will be a difficult task," Lisa informed her sisters. "Especially seeing as how none of us have managed to achieve such a feat throughout his thirteen years of existence. I believe we should ask him how we can go about doing so."

Lynn crossed her arms. "When should we ask him?"

"I know of the perfect time," Lisa stated. "But for this to succeed, you need to listen to exactly what I say. Now, here's the plan…"

0000

While the girls were holding their meeting, Lincoln was patrolling Royal Woods, making sure to look out for any DNAliens. Passing by the hotel, he eventually found some potential criminals. In front of the building, there were three men staring at it while a fourth one was looking at a tablet. They continued standing there until the tablet suddenly flashed green, causing them to remove the ID Masks they were apparently wearing. When they did, they revealed they were DNAliens in disguise.

'What the?' Lincoln mentally questioned as he further glanced at the DNAlien holding the tablet. His skin had a lighter complexion compared to his buddies, but that wasn't something that he really cared about. No, he was wondering why the DNAlien's head was on fire. Based on the fact it wasn't screaming in pain, it looked as if it might have some fire abilities.

Activating the Omnitrix, Lincoln began going through his options. He could use XLR8's speed to knock them all out real quick, but if the rest of the fire DNAlien's body was as hot as its head, Lincoln could lose an arm. He could use Big Chill, but again, depending on how hot the alien was, his ice attacks might not even hurt it. This left the boy with Diamondhead and Cannonbolt, both being somewhat fireproof themselves. In the end, he decided to go for Cannonbolt since he hasn't used the alien in a while. Not bothering to waste anymore time, the boy transformed into Cannonbolt, the green flash catching the attention of the aliens.

"You guys really need to work on not looking suspicious," Cannonbolt said, strolling out of his hiding place. Seeing the newcomer, the four DNAliens began hissing at him before the three normal ones began shooting their strange slime at him. Not wanting to get hit by the stuff a second time, Cannonbolt curled up into a ball and rolled to the side. Briefly popping out of his ball form, the alien began rolling forwards, prompting the fire DNAlien to shoot him with a burst of flames. Thankfully, Cannonbolt's thick hide was enough to protect him from getting burned, allowing the alien to plow through his opponent.

With the fire DNAlien down, Lincoln decided to focus on the other ones, wanting to remove them from the battle as soon as possible. Dodging more of their goopy spit by rolling to the side, Cannonbolt quickly barroled towards them. Though Cannonbolt was quick, the DNAliens had enhanced reflexes, meaning they could've narrowly avoided the attack, but instead, they decided to act like the brainless henchmen they were and continue trying to hit him with their spit. The result was what you might expect, Cannonbolt crashing into them as their spit had no effect on him.

Uncurling from his ball form, Cannonbolt smirked at the evildoers. "You guys are unbelievably dumb. How can you even work those ID Masks?" Turning back into his ball from, Lincoln bounced himself about twenty feet into the air and landed on the DNAliens, defeating them.

With the only opponent left being the fire DNAlien, Lincoln got out of his ball form to look for his opponent. As he did so, his back was struck by a fireball, revealing the alien's location.

"You should've hit the stomach," Lincoln told the alien as it tried to blast him again with a stream of fire. Sadly for the alien, Lincoln was able to react quickly enough, curling back into a ball to negate the damage. Rolling in place, the boy began charging up momentum, launching himself forwards a second later. With great speed and power, Lincoln slammed into the fire DNAlien, sending it flying into a building with enough force to dent the structure. Slumping forwards, the alien fell forwards, defeated.

With all the aliens taken care of, Lincoln strolled into into a nearby alleyway, waiting for the Omnitrix to time out. Once it did, the boy went back to the scene and picked up one of the ID Masks. He then took out his cellphone and began calling his grandfather.

"Hey pop-pop, meet me at the hotel as soon as possible. There's something you might want to see…"