Bring on the out-of-characterness and the hilarity! :D

Dark Mikey looked at the machine in Dark Don's hands skeptically. "Are you sure this is a good idea?" he asked.

"Absolutely," said the purple mutant enthusiastically. "You see, I had a revelation awhile ago-"

"Did it involve your sleeping patterns?" asked Dark Leo, who REALLY disliked the fact that Dark Don slept so little.

"No, Momma Leo," snapped Dark Don. "It involved why we're so much larger than the turtles," he said.

"We got kanabo DNA," said Dark Leo. "A whole lot. What more do you need to know?"

"We were given a lot of kanabo DNA. but what if we took away most of it, leaving only enough to retain our colourations and looks? Our builds might change so that we aren't as bulky."

"Are ya sayin' I'm fat?" snapped Dark Raph. Dark Leo put a hand to his forehead.

"No, Raph," he growled. "We aren't."

"Do you guys want to try it?"

"Try it on Mikey, he's generally useless," said Dark Raph.

"Hey!" Dark Mikey did not fully show how much those words hurt. His brother thought he was useless? Well he'd show him useless... "I'll do it though." Dark Don raised an eyebrow.

"Oh? Are you sure about that?" Dark Mikey hated needles with a capital H-A-T-E-D, but he was determined to show Dark Raph.

"Yes."

"Alright then, come on into my lab."

"Just don't put on your goggles." Dark Don pouted.

"But I like wearing those goggles when I experiment!"

"Too bad."

XxXxX

Dark Raph and Dark Leo were thoroughly bored, and to kill the boredom, they only had an extremely childish (in their opinion) game available. Dark Mikey had (supposedly) made it up. Dark Leo held up his hands and raised an eyebrow at Dark Raph. "Pulped turtle."

"Not correct, but it gave me a nice mental image, so it's your turn now."

"'Kay."

"Tent."

"No."

"Bizarre table."

"No."

"Easel?"

"No."

"Book stand."

"No!"

"What then?" asked Dark Leo, looking exasperated.

"House," mumbled Dark Raph.

"Oh." They paused for a moment, thinking. What would it be like to live in a house? To sleep in comfortable, warm beds. To have food when they needed it, and not having to go hungry... Dark Leo had known that luxury for awhile, even though he had been a prisoner, so he was able to build a better mental picture than Dark Raph. They were on what Dark Mikey had jokingly called a seefood diet. When asked what that was by Dark Don, Dark Mikey had cheerfully explained that when you see food, you eat it. Dark Don had not been impressed. They heard a sudden crash and flurry of swear words, prompting them to shoot up out of their seats and run to the lab. When they looked inside, they stared. There was Dark Mikey, as tall as ever, but with a less bulky build. Which meant his clothes and armour didn't fit. And his clubs had fallen to the floor. Dark Don looked surprised.

"I didn't expect the change to work that fast," he said, examining his changed brother. "This is a most interesting discovery." He reached one hand over to the keyboard and typed some notes. "Most interesting indeed." He looked at Dark Leo and Dark Raph, giving rise to an inexplicable feeling of dread. "Perhaps one of you two would like to go next?"

"Errr... I just realized I have to go get us more food, bye!" said Dark Leo, hurrying out of the lair. Before Dark Raph could make an excuse, Dark Don's hand closed around his arm.

"Oh good! A willing volunteer!"

"Like a sheep to the slaughter," snickered Dark Mikey as Dark Don made Dark Raph sit down on the cot.

XxXxX

When Dark Leo came back, he almost dropped the food he had managed to steal. All three of his brothers looked like... Like human athletes. Even Dark Raph. Their shells had changed too to accommodate the change. "Ah, Leo," said Dark Don, smiling. "Your turn."

"No thanks," growled Dark Leo.

"Come on, we're actually stronger this way. And our aversion to sunlight vanished. We tested it." Dark Leo frowned.

"No thank y-"

"Excellent!" Dark Don dragged him to the lab, a previously impossible feat, and sat him down.

XxXxX

Dark Leo was NOT happy. Not at all. Nuh uh, no way, no how. At least, that was what he said. In retaliation, Dark Mikey pointed out the fact that Dark Leo was almost eagerly getting to a spot where they could ambush the turtles. "Is he going nuts?" whispered Dark Raph.

"You mean he wasn't nuts before?" Dark Mikey whispered back. They had a good old snicker about this while Dark Don got exasperated with Dark Leo and started telling him off. "Perfect couple," muttered Dark Mikey, causing Dark Raph to have to support himself against a wall so as to not fall over as he laughed at that comment.

"Geez Mikey, ya have some pretty hilarious, sick ideas sometimes."

"Thank you, I guess."

"Will you two shut up? The turtles are coming!" And so they waited, while Dark Mikey idly twirled a club and smiled to himself.

"We'll have to arrange a date for Momma Leo and Daddy Don later so they can unwind," he whispered to Dark Raph, bringing about another laughing fit. When the turtles saw them, their jaws dropped.

"Dude! Where the heck did THEY go to look that good?"

"Ehehehehehe, thank you, Michelangelo," said Dark Mikey, smirking. "Glad you like the new looks. Blame Don for them."

"Hey, there's no blame seeing as you like it."

"Debatable," said Dark Leo rebelliously. Dark Raph rolled his eyes.

"Don't give us that, you like it and you know we know you do."

"Fine."

"Are we gonna fight or what?"

"You probably don't want to, but okay," said Dark Raph, jumping down.

"Hey!" Before Dark Leo could stop himself, he added "That's my line!" They stared at him, then shrugged and started fighting.