OK, this is going in only one direction, so I'll add something cartoony.
Markio sighed, knowing that this was gonna end up being cat this and cat that, when sudden;y, he was enlightened by being teleported somewhere else, in the vicinity of a dark alley.
Markio: Wait a minute... is this New York?
Suddenly, five robot smiths came from nowhere, obviously trying to get Markio. One came toward him swiftly. Markio sidestepped and tripped him, causing him to fall over. Markio jumped on top of him over and over until he was just a few knuts and bolts. Another came at him, when suddenly, a shadowy figure appeared.
???: I got this one!
The shadowy figure,(now to be referred to as shadow), ran up to two smiths and banged their heads together, causing them to fall backwards. Then they both ran at Shadow, who stepped out of the way and the two robots collided and exploded. Then there were only two robot smiths left.
Shadow: Back off, it's too dangerous, kid!
Markio: Oh yeah?
Markio ran right at one robot, which had a laser pointed at him. When he got close, Markio ran to the side, wall kicked over the robot, and landed behind the other. The smith fired the laser, but it hit the other robot in front of Markio, killing it. Then Shadow kicked the other one down, and jumped on it, breaking it.
Markio: Who are you?
Shadow: Uhh... Bye.
Shadow ran towards the end of the alley, when Markio came out of nowhere. Shadow turned around, and started running the other way, but Markio beat him, cutting him off.
Markio: Why won't you tell me who you are?
Shadow, getting frustrated, began climbing a fire escape, unaware that Markio had wall-kicked to the top. When Shadow got to the top, he saw Markio, who said,
Markio: Hi!
Shadow: EEERRRRHHH! Go away!
Markio: Tell me who you are first!
Shadow suddenly jumped down from the fire escape, running towards the street, Markio hot on his pursuit. Then, Shadow went through the manhole, thinking Markio was gone. As Shadow climbed down the ladder, and made his way through the sewer, he didn't notice that Markio was following him. Soon he came to his lair, where three other people were.
Shadow 2: Where were you, dude?
Shadow 1(original one): I was beating off these robots, who were fighting this kid, who apparently could've taken them.
Shadow 3: A kid SAW you?
Shadow 1: Not exactly, he didn't know I wasn't a human.
Markio was listening this whole time, in one of the corners. It was brighter in the lair, and he could see the shadowy figure. They were all TURTLES!
Leonardo(S1): The kid was following me, until I ran down here.
Michelangelo(S2): Dude, Leo has a stalker!
Raphael(S3): Don't you think he could have followed you down here?
Markio emerged from the shadows, unable to hide any longer.
Markio: Yeah, I did!
The TMNT stare at Markio, until Donitello grabbed Markio so he wouldn't run away.
Markio: Let go, Don!
Donitello: How do you know our names?
Markio: Long story...
Leonardo: Tell us then.
So Markio told them the whole story, of how smiths had been chasing the TMKers, how he had been with everybody else until he teleported here, everything.
Leo: Kid, you aren't too bad at martial arts.
Don: You could stay with us for awhile until someone teleports here or something.
Mikey: Oooh, stay in my room!
Markio: Sure, I'll stay.
So Markio stayed with the Teenage Mutant Ninja Turtles for the time being.
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Luigi likes to flirt in his backwards shirt! Yay!