Note: Forgot to list this in the first chapter, but here's how I'm treating the Teen Titans in Pokémon fashion.
Robin: Fighting
Cyborg: Steel
Raven: Ghost
Starfire: Fire/Fairy
Beast Boy: Normal
Also thanks to SilverWolf1130, I have decided that Mimikyu is able to use more than four moves because now that she's a human, she's not restricted to some of the rules of being a Pokémon so this can be a little more interesting.
Okay Begin!
Titans Tower...
Beast Boy's eyes slowly open to show that he's inside the medical room of the Tower, he sits up on the bed and places a hand on his head. After a few moments, he swings his legs over the side of the bed and walks out into the halls before entering the main room where all the rest of the Titans are.
"Good, you're up. How are you feeling?" Robin asks as he walks up to him.
"I have a small headache but other than that I'm fine." Beast boy replies.
"So what happened?" questions Cyborg.
"Okay, this is going to sound nuts; but I got into a fight with a ghost."
This reply gets a laugh from Cyborg, a confused look from Starfire, and looks of skepticism from Robin and Raven.
"I'm serious! I fought a ghost!"
Cyborg keeps on laughing.
"What is a 'g-oste'?" questions Starfire.
"Myths that are found in horror movies and stories. Basically they are people or animals who have died but their souls stay on earth. They don't exist though." Robin explains.
"Okay, then how do you explain the fact that I kept going right through her like she wasn't even there?" Beast Boy asks.
"She was probably a hologram. A projection."
"Yeah, like a hologram can send me crashing through a brick wall!"
"Then she has powers. But whatever the case may be, we need to find her."
"What did this girl look like?" questions Raven.
"Umm, let's see. I never really saw her face, she had on one of those zip-up hoodies that cover your face. The thing was a tan color and had black tipped ears on it while the zipped up part on her face looked like it had a face drawn on with crayons. The sleeves went over her hands, she had a wooden tail attached to her tailbone, oh, and she stood in a weird way and made sounds like this!"
Beast Boy then slumps over and lets his head and hands hang down and he does his best to imitate the crackling noises she made.
"And when she attacked me, her wooden tail had become surrounded with this strange purple glow before she hit me with it; and she also had these giant, purple, glowing claws. She actually gave me the creeps."
"Are you sure that you're just not making this up?" asks Cyborg.
"No. Beast Boy's not smart enough to come up with a figure like that. If he was making it up, it'd be some dumb laser robot or something." Raven says.
"Thank you, Raven." Beast Boy says before he realizes that he was just insulted. "Hey!"
"Are you saying there might actually be a g-oste in the city?" Starfire asks.
"Yeah, Raven, that sounds a little ridiculous." states Robin.
"I assure you that they do in fact exist. But, this is not one I've ever heard of before." replies Raven.
"Hah! I told you!" Beast Boy exclaims as he points a finger at Robin.
"That, shouldn't be possible." Cyborg says, still somewhat in denial.
"Says the half man half robot that's in a room with an alien, a green shapeshifter, a girl with magic powers, and a teenage martial artist that was the sidekick to the most feared crime fighter in the world." Raven deadpans.
"... Point taken. So what do we do? If she is this thing that is invulnerable to attacks, then how do we fight her?"
"We could try the befriending." Starfire suggests.
"If Beast Boy found her near the murders she could be linked to them, and if that's the case, this is not someone we make friends with." Robin says much to the tameranian's disappointment. "We need to find out who this is. We'll search the city and see if we can find this girl. But this time, we stay together. Titans, GO!"
The abandoned warehouse...
Mimikyu wakes up to the blinding light that's pouring in from one of the windows of the warehouse. She uses one arm to shield her eyes and the other to help herself get off the ground. The Pokémon moves out of the sunlight and hears her stomach growl. Mimikyu then walks out of the warehouse and tries to find a berry bush or something. This place could at least be kind enough to supply her with that. But no, she has to be in a large city with absolutely no berries to be found. Just like in Alola, Mimikyu travels out of sight of everyone, be it human or Pokémon, in order to not scare them off. But for her, this has become more of a force of habit instead of her actually caring if she does or not anymore... sunlight also isn't her favorite thing in the world. It's bright and annoying.
Mimikyu eventually smells something pleasant and walks towards it. The scent leads to a shop with tables, chairs, and umbrellas outside that are host to several humans; one of them being that green Ditto thing from the night before. She starts to walk across the street towards the smell of food and ignores the humans gasping and speeding away from her. The closer she gets to the food, she becomes able to hear the humans, green Ditto, and possible steel type talking but chooses to ignore it due to the fact that she doesn't really care. Unknown to her, the human in the purple cloak tenses up as she feels her presence. From Mimikyu's days of watching humans because she wanted to make friends, she knew what to do when she reached the restaurant. She sits down outside and picks up a menu, pulling it up to her "face" just in time to hide herself from the hooded girl as she turns around.
A waiter comes out to take Mimikyu's order, but takes a step back when he sees her before sucking it up and forcing a smile; he does however relax when he notices that the Teen Titans aren't reacting, he assumes this is a good thing.
"Uh, What can I get you?" he asks.
Mimikyu takes the pen out of his breast pocket and draws a Pecha Berry on a napkin.
"I'm sorry, I've never seen that fruit before." he tells her.
Mimikyu scribbles over the drawing and draws out a Rawst Berry next to it.
"I'm sorry, I've uh, never seen that before either." the waiter says.
Seriously? Okay, one last time. Mimikyu scribbles over the second drawing and draws a Pinap Berry underneath the other two.
"Once again, I have to apologize." the man says.
Mimikyu then wads up the napkin and tosses it behind her before pointing a "cheese pizza", whatever in the world that was; she just wants SOMETHING.
"One cheese pizza coming up." the waiter says before he takes the menu but lets Mimikyu keep his pen out of a feeling of uneasiness about her.
With nothing to do, the Pokémon blanks out into her own thoughts.
Several years ago...
"Cutiefly, use Silver Wind!" the Pokémon's trainer shouts.
"Cutie-flyyy!" the Pokémon says as a sparkling wind emerges from it's wings but is swiftly dodged by a Krookodile.
The opposing Pokémon then lunges at Cutiefly and uses Crunch, doing massive damage and forcing it to the ground afterwards.
"Cutiefly!" the trainer calls out.
The Krookodile then tries to do the same thing to the trainer but the attack comes into the bug/fairy instead due to the fact that it got up as fast as it could and moved to save it's trainer. The small Pokémon then starts to glow a bright blue color and it's body fights back against the attack. The Krookodile is sent sliding back when Cutiefly finishes evolving into Ribombee.. The newly evolved Pokémon then launches it's new move Pollen Puff at the opposing Pokémon and does a great amount of damage upon contact. The Krookodile then digs into the ground.
"Fly upwards, Ribombee!" it's trainer commands and the Pokémon does as it's told, making the Krookodile miss it's attack.
"Dazzling Gleam!" the trainer yells and the newly evolved Ribombee fires the attack, knocking out the ground/dark type.
"Alright! You did it!" the trainer exclaims happily as he hugs his Pokémon.
"Bom!" the Pokémon says happily.
Back to present day...
*Ahem* Mimikyu hears and snaps back to the present to see those three humans with the green Ditto and the probable steel type standing in front of her.
"Can she even understand what we're saying?" the steel type asks it's companions.
Two talking Pokémon, that's pretty rare. Now that she has a good look at them, the two females don't seem like they might be human either. Then the last one...
"We need to talk. Now." the human tells her.
Mimikyu doesn't reply.
"Hello? Earth to ghost." the green Ditto says as he waves his hand in front of her face.
However, he didn't expect to get hit with a Wood Hammer and sent crashing into the table where it was previously sitting. Normally she would've started with a Shadow Claw, but she learned last night that the normal typing even sticks with whatever form of Ditto this is.
"Beast Boy!" the orange female exclaims.
The next thing they know, Mimikyu jumps on top of the table and they have to jump out of the way of a Shadow Claw. She attacks the only human there with two more of the same move but he dodges and jumps out of the way of them. This human, he looks like... he looks like... Mimikyu slashes at the human again but just like the last times, he moves out of the way.
"Azarath Metrion Zinthos!" Mimikyu hears one of the girls chant.
She jumps out of the way of... two Shadow Claws that came from the ground? The Pokémon lands and her feet slide across the road before stopping. Her head and arms hang down and she twitches when she starts to crackle.
The Titans view...
"Kyckyk"
"Alright Titans, let's..." Robin starts but notices an odd look on Raven's face. "What's wrong?"
"I just read her soul." the half demon explains.
"You can do that?! Cool!" Beast Boy yells.
Ignoring him, Raven continues: "I've never seen anything like it. Her soul seems to be split."
"What do you mean?" asks Starfire.
"I mean she doesn't seem to be neither alive nor dead."
"So she's... dying?"
"More like half dead, half alive."
"Isn't that kind of the same thing?" Cyborg questions.
"She's not dying, she's both dead and alive at the same time. It's hard to explain. But there's something else there, a great sense of anger."
"At what?" asks Beast Boy.
"I'm not sure, but it's very strong."
"So, we're about to fight a vengeful spirit that's somehow also partly alive and yet we can still go through it. That's a new one." Cyborg deadpans.
Their conversation is broken up when the "ghost girl" jumps at Raven and assaults her with a barrage of punches, kicks, and hits from her tail and sends her flying back. Cyborg tries to punch her but he passes through and she slashes him with one of those ghost claw things. Starfire throws several starbolts at her but the girl's wooden tail becomes surrounded by a purple aura and she hits the attacks back at her, some of them making contact. Robin and Beast Boy charge at her while the latter transforms into rhino but the girl fires a beam that sends Beast Boy sliding back and Robin's kick goes right through the girl before she hits him with her purple auraed tail. Starfire catches the girl off guard with an attack from above and the girl looks up to see a green, glowing fist head right for her.
The Titan's eyes grow in horror as the girl's head snaps back from contact like it broke and was even partly flattened. Starfire jumps back away from her and the girl's head slowly rolls back into place before she does the same thing to the tameranian that she did to Raven. Cyborg then hits the girl with a blast from his arm cannon and she's sent back flying before doing a backflip in mid air and attacking him several times with her ghostly claws before eventually grabbing him and throwing him into Beast Boy who was running at her as a wolf. Raven then sends several magical attacks at her but unfortunately all of them either miss or a dodged and the girl jumps at her, somersaults in the air, and brings her wooden tail down on the Titan's head, sending her crashing to the ground and causing a small crater.
Once the girl lands, Robin takes a swing at her with his bowstaff in the hopes that since they themselves can't do any damage to her, maybe an object can, like how Cyborg and Starfire's powers and Raven's magic does. However, the girl's tail lights back up and her and Robin block and dodge blows from one another until the girl is hit by a blast of magic from Raven and sent tumbling across the ground. The girl struggles to get back up as the three males of the Teen Titans stand side by side and the females are flying behind them.
"It's best if you just stay down." Robin tells the girl with his eyes narrowed, but she responds by crackling and slowly pushing herself up.
"What is her deal? She's got to know that she can't win this right?" Beast Boy asks.
"Why does she still wish to fight?" Starfire questions.
"Raven, you said she was angry. Is it possible that WE are who she's mad at?" Robin asks.
"Us? But we have never seen her before. What could we have done to make her upset?"
"Maybe BB made her mad yesterday when he tried to stop her?" Cyborg said jokingly.
Before anyone can answer, the girl does another crackling noise and sends both of her ghost-like claws at them and Raven crates a shield to protect them as the girl keeps slashing at it.
"I can't, hold it for much longer." Raven announces a few seconds before the shield breaks and Raven his hit in the stomach by one of the girl's attacks and is launched back.
"Raven!" Beast Boy yells before running to the rescue and catching her unconscious body in his arms before she hit the ground. "She's out cold, guys!"
Robin then throws three explosive batarangs at their opponent but she fires a beam from her body and they detonate from the impact, causing a cloud of smoke big enough to obscure their vision. After coughing for a second, Starfire looks up and sees a pair of yellow, glowing eyes. She gasps before she is hit with a barrage of punches, kicks, and hits from the girl's tail and sent flying into a car.
"Starfire!" Robin exclaims.
The leader of the Titans is unknowingly about to be hit with a ghost claw when Cyborg throws a faster and stronger punch at the girl than before, knocking her away. He was able to see her thanks to his robotic eye. The smoke then clears to show that the girl is on her feet again as she stands in the middle of the street, with her right arm on her left side and is slightly bent over.
Mimikyu's view...
Flash Cannon, Bullet Punch... it really did have to be a steel type after all. The last three opponents look at her in anger, especially the human. What did he have to be angry about? He knows nothing of pain. Mimikyu can feel her hands roll up into fists before she builds up some energy and fires a Dazzling Gleam at them. The three jump out of the way and the steel type fires another Flash Cannon. Mimikyu moves her upper body to the side and dodges the attack before firing her own Flash Cannon from her hands, hitting the steel type and making him cry out in pain as he was launched.
"Cyborg!" the green Ditto yells.
Mimikyu stares at her hands. How did she do that? She can't even learn Flash Cannon. Did she use Mimic? How? She should only be able to use four attacks at a time. She was interrupted from her thoughts when the green Ditto was running at her as some sort of new version of Mightyena and bites her leg.
The Titan's view...
'Wait, seriously?! Biting works?!' Beast Boy thinks to himself.
Mimikyu's view...
Mimikyu gets her attacker off by releasing a flurry of hits with Play Rough, knocking the green Ditto out and she immediately gets attacked by the human afterwards. All of his attacks are doing no damage and Mimikyu stops him from his assault by grabbing his throat and making him fall on a knee. The human's eyes were already filled with anger, but now that he can see that she can hardly even stand anymore but he also can't do any damage to finish the job; makes him even angrier.
"Who are you?" the human demands to know as he is slowly prying her hands of his neck.
"Kkkkyk" Mimikyu crackles as the two try to overpower one another.
It ends when Mimikyu uses Wood Hammer to strike the human's chest, making him cry out in pain, and launches him back into a building. She looks at his unconscious body and crackles before creating a Shadow Claw to finish him off. But before she can however, she feels a ton of pain in her side again and the attack fails so she can put her arm to her injury. She then notices that several parts of her outfit are ripped and torn, meaning that she has to make repairs before anyone sees her. While she doesn't care about human injury, she still doesn't want them to see her. So Mimikyu stumbles in pain down the street as fast as she can before remembering something. She turns back around, heads to the restaurant, and takes the food she ordered from the absolutely horrified waiter, before heading back to the abandoned warehouse.