A/N: Hey, guys! Here's this week's chapter. And just a heads up: I'm leaving for a week in Montana in...six days now. So next week's chapter will be a little early and the week after that a little late. Sorry. Anyways, apparently you guys Luke Castellan as Oliver Queen a lot more than I do, because I have a bunch of reviews to respond to. Yay! One more thing before we start. I did not mean for this to turn into a three-way crossover, it just sort of happened. And it's probably gonna get bigger and bigger once Percy and Annabeth start trying to get home in earnest...

Followers: IcyFox17 (I am so sorry I skipped over you! Prithee, forgive my mortal soul!), Vaughnilla, SirRoland, ZeAwsumOtaku, and KiSierra. I love you guys! There are 126 of you now, so keep it up!

Favorites: IcyFox17 (Again, forgive my mortal soul!), Vaughnilla, ZeAwsumOtaku, TheLastFlyingGrayson3, KiSierra, and ireallyloveanime46. I love y'all! Keep it up! We're up to 84 now. Yay!

Okay, y'all. Brace yourselves. This is going to take a while.

AACM25: Well, it's nice to see you again and thank you! I try to keep the characters as close to how they actually are as I can, especially when it comes to Percy, because he's so dang fun to write! And the duel...ah, the duel. Mwah ha ha ha ha! :)

Owlover1: Yeah, that's why I almost didn't do that last bit. Oliver does look pretty different, but if you think about it, his younger self with long hair had hair that was more blonde. And honestly, I think Stephen Amell would make a better Luke Castellan than the actor the idiots who did the movie picked. But thanks for reviewing! :)

Turtlepower12: Yes, he is... Mwah ha ha ha ha ha ha ha! :)

fangirl2410: Spoilers... :)

seagurl3: Of course, my friend. Of course. Anytime. :)

Puppylove84: Oh, you liked the cliffhanger? Feast your eyes on the cliffy at the end of this one! Once you get there, that is. Don't just skip down to the end and read the end. That would make me sad. Not that I would know if you did... :)

Sibyis Langdon: I've done this way to many times for one AN, but... Mwah ha ha ha ha ha!

IcyFox17: Well, I'm glad someone could guess at it. It's actually one of my favorite things to do, that guessing what's going to happen next and just thwarting all the twists a movie try to throw at me. Even with Savitar...well, let's just say that the whole season I was all like, "Savitar is Barry! Savitar is Barry!" This chapter is longer than the last one, so enjoy. And, once more I am so incredibly sorry I skipped over you somehow. Curse my imperfect eyes! :)

Guest (1): That is by far the most enthusiastic reaction I've gotten, I think. Thank you! :)

Bass Beast: Ah, but can you ever truly trust anyone? Can you? CAN YOU? Well, the answer is yes, but in this special case... Oh, I'm gonna have fun with this. Thank you! :)

Demigods9 (Guest): Thank you! I'm so glad you liked this. I hope this chapter is just as good. :)

Meow (Guest): Oh. I did not know that, but for the sake of this fix, pretend that it's not. I just chose twelve 'cauase of the twelve Olympians. He he. Oops. :)

Guest (2): Here you go! Enjoy! :)

KiSierra: Sorry to keep you waiting! Enjoy this chapter, please. I'm begging you on my hands and knees! :)

Lauriver4ever: Right?! Stephen Amell could totally play a Luke. And remember this takes place three or four years after the Second Titan War, so he's about the right age. :)

HaywireEagle: Well, your reviews weren't exactly complementary, but thanks for taking the time to let me know what you thought! I know the Tartarus thing is overused, but I really didn't do much with it, as you should know. And honestly, I didn't do it to force drama. I'm just kind of reminding you guys that while Percy is this lovable goofball, he's also seen some pretty scary stuff. Also, I haven't finished all of season four of Arrow, so I'm not super well-versed in that fandom. If the gods do exist on Earth-1, however, they definitely don't exist in the same way. I don't recall Oliver ever being charged by a Minotaur. Or did that just happen later in the franchise? And I know Percy's a little too stupid in this fic. I just wanted to make this as goofy as possible (because that's who I am), so I made him a little dumber than he is. But, again, thanks! :)

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But no. It couldn't be him; he was dead. This is just because of that whole multiverse thing, I told myself. Deep breaths, deep breaths, lower the sword. Yeah, that wasn't happening. The sword was going to stay pointed right at his face until that son of a- Ahem. Can you blame me? Picture this: one of your enemies (and a dead one at that) who you thought you'd never see again is standing right in front of you. Fun.

"Cool!" Cisco exclaimed. "So what's your earth's Oliver Queen like?"

My mind immediately shouted, THIS IS NOT COOL! NOT COOL! Annabeth and I were still staring at "Oliver Queen." Annabeth turned her head in my direction without taking her eyes off of L-Oliver. "I'm not sure if I should hug him-"

"Or attack him," I finished for her. "Yeah, I know what you mean."

"Let's go with neither," Oliver said (was that nervousness I detected?) through his teeth.

I smiled tightly and let out an obviously fake laugh. "Ha ha ha. I'm leaning towards the second option. But first," I turned and grabbed Barry's arm, "can I talk to you for second?"

Barry nodded and followed me until we were standing just outside the elevator door. I looked back and saw Cisco and Caitlin trying to make conversation with Oliver.

Caitlin seemed to be having more success, as she was asking after the health and well-being of Oliver's team (he has a team now? Where were they?). Cisco was messing with all the computers and other bits of tech in the room.

Annabeth was kind of thwarting their efforts at being friendly, however. She was still staring at Oliver with an evil glare and fingering the blade of her knife. Oliver was trying to figure out what our secret was in between answering Caitlin's questions, I think (I'm not great at reading lips), but Annabeth maintained her stoic silence.

"What is going on with you two?" Barry demanded once we were out of earshot. "I get that you've got this whole children-of-the-gods thing going on here, but you're acting like you've seen an evil ghost."

I rubbed my temples, trying to dislodge my shock and annoyance. It didn't work. "Okay, you remember that friend I told you guys about? The one that was corrupted by Kronos?" Barry nodded, like, Yes. I'm not an idiot. What does that have to do with anything?

Then he seemed to get it. "You mean...he's-"

"Yes. Your 'Oliver Queen' is the doppelganger of the physical form of basically the incarnation of evil."

"Oh. Well...this just got awkward."

I glared at him. Really? Do you think? What could possibly make this situation awkward? "Look, are you sure that there is no way this guy is from my earth?"

"Yeah."

I breathed a sigh of relief. "Thank the gods."

"Seaweed Brain," Annabeth called, "could you come over here and stop me from turning this guy into a pincushion?"

"Only if you help me," I responded. But I walked back to her side with Barry trailing behind me. "Any more surprises for us?" I muttered to him as he passed me. Barry's only response was an apologetic smile.

"So," Oliver cleared his throat. "Can we talk more about who you are and why you want to kill me in a way more violent than necessary?"

I was deliberating on how to respond, and if I should even respond at all or just let Annabeth talk, but just then the elevator dinged. I could have smacked my head against a wall, if it weren't for the fact that banging your head on the wall makes you look crazy and causes brain damage, something I do want. That's all we need: more people. With my luck, there'd either be someone else that I knew from my life or a gun shoved in my face. With one look at Annabeth, I could tell she was thinking along the same lines. I wasn't sure about her, but I definitely wanted to run over and whack those dummies dressed in super suits with Riptide shouting, "STUPID! ALTERNATE! EARTHS!"

The elevator's doors slid open revealing three girls and one guy. Two of the girls were blonde, although one wore glasses and the other didn't. The other girl had short dark hair and an almost angry expression. I say almost because it was like she was trying to hide the fact that she was angry, but I had seen those same eyes in the Minotaur multiple times. The only guy was tall, and seemed taller since all the girls around him were fairly short, and African-American with huge arms, like someone from the Hephaestus cabin.

No! Shut up, brain! If you start thinking like that, this earth's Leo or Nyssa or maybe even Harley is gonna pop out of the walls.

Before I even had time to start groaning, the blonde with glasses had yelped and almost dropped her tablet, the other blonde and the brunette were crouched in stances like they wanted to fight (trust me, they didn't. Not really), and the Hephaestus guy (no! Bad Percy, bad!) had drawn a Glock 17 and pointed it...yup, you guessed it. Straight at me.

Annabeth eyed the two girls who were ready to fight like, I'm on the hunt, I'm after you, and I'm hungry like the wolf. Hang on, why did I just put song lyrics in here? Well, whatever. Duran Duran could've been inspired by Annabeth's glare, for all I knew. I walked right up to the guy pointing a gun at me until the muzzle was pointing right at my forehead. "Don't waste your bullets."

"What, your water powers let you catch bullets now?" he challenged.

I rolled my eyes. "Don't be stupid. I can dodge bullets."

Barry cut in, "Dig, it's cool."

"What do you mean it's cool? Johnson and Chase are standing right here and you and Oliver have got your masks off like complete idiots."

Barry sighed in exasperation, like he was tired of explaining this to people. Oh, he gets to be tired of this now? I'm the one who keeps getting confused for my doppelganger and threatened with potentially deadly weapons. "This is them from another earth. They're not bad people, as far as I can tell. So, we don't need to shoot them. And besides, I can catch bullets."

I gave Barry an incredulous look. "So, you can catch bullets, but you couldn't catch a dagger my girlfriend threw at you?" Then I looked back at Annabeth. "Not that your aim isn't spectacular, Wise Girl." She acknowledged the compliment with a nod of her head and finally relaxed, seeming to decide that neither of the girls were going to attack her.

"Ollie, why do you have your hood off?" the brunette asked.

"A trade," he replied promptly. "A secret for a secret. They're not metahumans - they're something else from another earth - but they wouldn't tell me what until I told them who I was."

The blonde with glasses chimed in, "So why were they eyeing you like you were one of their dead enemies reincarnated, or something?"

"Because that's what he is," Annabeth responded.

"What?" Cisco, Caitlin, Oliver, and the four people in the elevator chorused.

"Long story," I explained. "Short version: doppelganger," I pointed at Oliver, "friend. Then bad. Try to kill. Start war. War kill lots of people. He die. We live."

Annabeth smacked her forehead. "Sometimes, I'm embarrassed to be seen in public with you."

I smiled. "But you love me anyway."

"Do you have names on your earth, or is that just us?" the blonde without glasses asked in a not-so-subtle attempt to find out who we were.

Annabeth and I both gave her looks like, How dumb do you think we are? "I'm Percy, and this is my girlfriend Annabeth. Your turn. Then we can tell Mr. Trait- that is, Ollie, over here the information he traded his identity for." We got quick introductions after they finally stepped out of the elevator, which were really nothing more than names. But that's all we gave them, so...can't blame 'em. Felicity (yeah, that's right. I learn names fast) walked over to Oliver and gave him a quick kiss as I said, "Okay, Wise Girl. You explain this time. I did Team Flash."

Annabeth clearly wasn't happy about it, but she explained our parentage and how the Greek gods were real and blah blah blah blah.

Diggle's eyes were wide. "Every time life finally starts to feel more normal, something like this happens. Are you totally sure you're not metahumans? Like, have you actually met your...godly parents?"

Annabeth nodded. "Yeah, a few times. Besides, there was no particle accelerator explosion on our earth. Technically gods aren't allowed to meddle in mortals' affairs, but sometimes they make exceptions. Although, you generally don't want to be in a god's presence, especially if they aren't your parent. There's a good chance they'll either give you some life threatening quest or zap you into a pile of ashes."

"Okay, but how did you get here?" Laurel asked. "From what I've heard, it's really hard to just hop into another universe."

I smiled sarcastically. "Well, I was brought here by Death Face-"

"Who?" Thea interrupted.

"Zoom," Barry explained. Team Arrow (oh my gods, now I'm doing it with these guys too!) nodded like this made more sense.

"Anyways, Death Face brought me here to do something, but I didn't really hear what he wanted me to do. He said if I didn't do it, I'd never see my friends again, but I just kind of ignored him. This was before I knew I was on an alternate earth. Apparently, he wanted me to kill the Flash," I shrugged. "Well, that's not happening. Unless you turn out to be some monster that smuggled itself here from my earth. Then you're out of luck."

Barry gulped.

"I followed a few days after," Annabeth said as she picked up the story. "I think Melty Mouth-"

"Will you ever call Zoom by his real name?" Cisco muttered in an annoyed tone.

"-accidentally ran back to my earth. The portal stayed open for a few seconds, so I ran in and hoped I'd end up where my boyfriend was." Annabeth took my hand. Hmm. Melty Mouth. I like that nickname. I might have to use it more often.

"Why the old fashioned weapons, though?" Thea questioned. "Not that I'm judging; Ollie and I both use bows and arrows. Dig here's really the only one out of all of us that uses a gun." Okay, so from that I'm just gonna assume that Thea, Laurel, and Diggle wear the other three suits on display.

"Well, actually, we do have a twelve gauge shotgun in the armoury now," Annabeth corrected. "Although, I think the Ares cabin stole it, or at least enlisted someone from the Hermes cabin to steal it for them."

"I think what she means is why do you need weapons?" Diggle corrected. "You're just kids." I swear, if I had a drachma for every time I heard that, I'd be as rich as King Minos. Why is it that everyone always just assumes that all the monsters died? I mean, just because they were killed doesn't mean… Yeah, okay. Never mind. I see how people could think that.

"Because of those monsters we mentioned earlier," I explained. "They try to kill us, so we kill them first. Then they reform in Tartarus later. I like to use a sword, like most demigods." I glanced at Riptide. "Annabeth uses a knife. Most of us prefer older weapons."

Felicity finally spoke up, "Are you any good with those things? I mean, how much training can you really have at your age?"

Sigh. "I've actually had quite a bit of training," I informed her trying not to sound like she was getting on my nerves with these demeaning questions (which she was). "More than five years. Annabeth's had more than ten."

Oliver gave me a small smile with one corner of his mouth. I think it was supposed to unnerve me. Well, if it was, it didn't work. "Then you won't mind if we spar?"

"Not at all," I responded promptly. Yes! Finally, I get a chance to whale on this guy's gáidaros. If you're waiting for a translation...well, that ain't happening. Luke had been a master swordsman. This guy… Well, he may have Luke's face, but I doubted he had his skill with a sword. "I think Annabeth will want to spar with you too, though. Can you use a knife?"

"Naturally," Oliver replied. Oh, he was a smug one.

"Would you like to go first?" I asked Annabeth with a smile.

"No," she answered. "I'll let you go first. Then I'll spar with him after you win. That will make his emotional humiliation more complete, I think. Being bested first by a teenager, and then by a teenage girl. Have fun, Seaweed Brain."

Oliver led me over to an open area and took out two swords. Then he set them down on a nearby table a started to take the top half of his suit off.

Barry came over to talk to me. "Look, I'm not sure this is the best idea."

"Why? Because we don't have time or something?"

"No," he countered, "because when I asked Oliver to train me, he stuck two arrows in my back. I heal fast. You don't."

"Well, actually, if I touch water, it heals me, so…"

"Don't let him hear that."

"Too late," Oliver called, though his voice was somewhat muffled by the fabric of the suit he was pulling over his head."

"Don't worry," I reassured Barry. "He won't be able to do anything. He won't have the chance."

Barry shook his head and walked back towards Oliver. I heard him mutter, "Please don't kill him," before he walked off. Really? How about a little faith in my abilities here? After all, I've kept myself alive since I was twelve. Well, that's not entirely true. I've had a lot of help. But I digress. I followed Barry with my eyes as he walked away and realized that everyone else in the room was watching us.

"Why did you take your shirt off?" I asked Oliver.

"Well, if you're as good as you say you are, this could take a while," he responded.

I shook my head. "No. It won't. And that just leaves you more susceptible to injury. Am I right, Wise Girl?"

"Yep," Annabeth responded with hardly a pause. "From what I can see, that suit is made with a Kevlar weave, so it would deflect a lesser strike from a mortal sword. Against Celestial bronze, however, it wouldn't make a difference. There'd just be one big hole in the suit."

Cisco raised his hand. "Could we not do that, please? I like just made that suit for him."

Then, without giving me so much as a warning, Oliver snatched up the two swords and ran straight at me. I stood my ground calmly - well, more like lazily - and waited for him to come within range. So far, I was not impressed with this guy's tactics. Once he had reached me, I deflected the two strikes that came in quick succession and, before he could blink, rolled between his legs. I came up standing behind his back and waited, the tip of my sword touching the ground. I raised a single hand and beckoned in the universal sign for Bring it.

Oliver came at me again and pressed me with a flurry of quick strokes. At my legs, my side, my head, a stab at my torso. Just to mess with him a little, I stayed defensive doing nothing more than deflecting his strikes. Even as we fought, I fought off memories of my first days at camp. Keep your guard up, Percy! A jab from the practice sword. Not that far up!

Eventually, I got bored. Making defensive play after defensive play was a little tedious. Time to go on offense.

I quickly turned the table so that I was the one pressing Oliver back. Only, for a moment I didn't see Oliver. Despite the fact that there was no scar on the left side of his face, I was fighting Luke. My strikes came faster and faster until Oliver was narrowly avoiding being impaled. I don't remember what happened next; just that all of a sudden he was on the ground and my sword was poised to strike above his chest.

I moved my sword away and cleared my throat, offering Oliver the hand without the sword. "Sorry."

His only response was to take my hand and pull himself up.

"You're not bad," I commented. "For a mortal." I don't think he liked that very much. How could I tell? He gave me what was supposed to be (I think) a death glare, but a death glare to me is when a hellhound is leaping at you snarling with fangs bared and red eyes glowing like coals, so…

"My turn!" Annabeth declared. "And I, unlike you Percy, don't play with my food." Then she walked a towards me until she was right next to me. "You okay?" she asked softly.

"Yeah," I answered. "It's just...fighting him feels like fighting Luke. Be careful. I almost took it too far." Annabeth smiled at me and nodded. I went up to where everyone else was standing to watch the fight and sat down in one of the swivel chairs as Oliver switched out his swords for a Bowie knife.

"You didn't even break a sweat," Diggle observed as he came to stand by me.

"I've had a lot of practice," I said meeting his eyes evenly. "And for a while, I was just messing with him."

Annabeth and Oliver started sparring. As he had done with me, Oliver made the first move. As he ran towards her, Annabeth stowed her knife back in it's sheath up her sleeve.

"What is she doing?" Laurel muttered.

"I hope she knows," Thea commented.

Caitlin looked bored. Diggle watched passively. Barry seemed to be watching everything, trying to make sure that neither Annabeth nor Oliver ended up with a knife in their gut. Felicity seemed more focused on the shirtless Oliver, who for some reason had a million scars, than the actual fight. Cisco was resting his chin on his hands and his eyes danced with excitement. Again, I got the feeling this was less like a real fight to him and more like a movie. As for me, I just smiled. My Wise Girl could handle anything. Oliver was going down.

When Oliver reached Annabeth, her right hand shot out, twisting the knife out of Oliver's hand. Then she punched him in the gut with her free hand and judo flipped him, leaving Oliver breathless on the floor. Cisco really did start jumping up and down and clapping then.

"She just...she took him out without a weapon! Ha ha! This is so freakin' cool!"

There was a stunned silence until Oliver cocked his head, which looked weird because he was still on the floor. "Hang on. I've been thinking...you said earlier that Zoom wanted you to kill the Flash." I nodded, confirming the fact. Typical. He's just been beaten twice by people he thought were below him, so he changes the subject. "Well, if Zoom wanted you to kill Barry...he'll be back for you. From what I've heard about Zoom, he doesn't tolerate loose ends. And if your doppelganger is working for him now…"

"He'll come to make sure you can't help us work against him," Barry realized.

"I thought you guys realized that," Annabeth piped up a little nervously. "I assumed you were confident in your ability to stop him and that's why you hadn't done anything to keep us safe."

Caitlin, Cisco, and Barry exchanged panicked looks. "That's not it at all," Caitlin admitted.

"We need to move," Cisco declared. "Zoom probably lured us here so he could-"

As the lights flickered, blue lightning flashed into the room and solidified into Melty Mouth's form half a second later. When the lights came back on, the sparks of blue lightning that coursed up and down his body were just as noticeable as they had been before. Now, however, we could all clearly see his black eyes.

"Maybe you should've thought a little...faster," he spat at us.