Helloo everybody! Today I wrote Animaniacs and TMNT (2012) crossover what if Yakko was in another portal to New York to Burbank.
  I hope you like it.
Donnie created a portal to another dimension.
Leo and Raph are busy fighting over a game. Mikey was busy skateboarding.
"Done!" Donnie turns on the portal but it made a spark sound. Donnie groaned in frustration. "After a whole days I invented it so I can go to the dimension but it's a hunk of junk. Donnie kicked it as he went out of his lab.
Suddenly the portal began to spark to a glowing purple light.
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Burbank
The Warner siblings being chased by Ralph, Yakko ran fast as he could suddenly he fell into a hole. Wakko and Dot are looking for their older brother.
"Yakko where are you?" Dot calling for him.
Dimension
Yakko falls to the dimension screaming falling to his doom.
He landed on the metal ground. Yakko groaned in pain getting up, Rubbing his sore head. He looked and saw everything was a lab belongs to someone who is A genius.
"Where am I?" Yakko asked. He looked around and saw turtles with colorful mask. Having their conversion.
"Did you get the portal fix?" Mikey ask as Donnie said. "No. I tried guys, it's not working as it use to be." Before Yakko could go close suddenly he accidentally bumped into something heavy that tipped over to the ground making a loud sound. The four turtles were startled as they turn to someone who did it. Yakko ran away. "Hey wait!" Leo ran after him. Yakko ran as fast he could, but trip over a screw driver and landed to ground that hit his head and his whole world went black.
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   Then Yakko heard voices.
"Where did he came from?!"
A voice said was gruff and aggressive. "I don't know Raph? He probably something from a dimension." A another voice said that sounds like him but different.
  Yakko's eyes opened slightly. "Dudes he's waking up." A voice said. Yakko opened his eyes to see a bright above him. Was four figures looking at him. The green eyed figure glaring at him. A reddish brown eyed figure looking him, a blue eyed and dark blue eyed one looking at him though.
  Yakko eyes widen. "AAHH!" Yakko screamed the four turtles screamed as Yakko get up and ran backed up in fear.
"Stay away!" Yakko pulled out his mallet. "I have mallet I'm not afraid to use this!" Yakko panicked.
  Raph folded. "He has no idea, why he's hear." Raph said glaring.
  Donnie knelt down putting his bo staff down.
"Hey we're not gonna hurt you we promise."
Yakko backed up in fear.
Here you go I'll update more of TMNT and Animaniacs story I hope you like the chapter of the story?