A/N: this has been bothering me for a while now. Plus I remember someone bribing with cyber cookies so I'd write a Mareo fic so here it is. I'll start the sequel for For The Love Of Leo at a later stage, but this story keeps screaming at me from the back of my mind.

Am I scared of the psycho screeching voice?

Yes I am.

Apologies spelling, grammar, OOCness

Disclaimer: I do not own Lab Rats or any of its characters.

Introduction:

The brunette lifted a cigarette to his mouth as he leaned back against the wall, letting out a slow puff of smoke as he waited just outside of the school's main entrance. A few girls walked by, giggling madly when the man caught them staring and sent them a wink. The teens swooned, each turning a light shade of pink before scurrying away from the older man's seductive smirk.

'Stupid girls', He chuckled before taking another drag from the cancer stick. Brown eyes glanced to the side, watching as the students kept filling out of the building. Some moving in groups while the others chose to walk alone.

The man gave a sigh, feeling patience run out of him until a boy appeared and he smiled. "There he is."

Walking between Bree and Chase, was Leo. The boy had a bright smile on his face as he refereed the bionic brothers staring contest while the speedster simply rolled her eyes, muttering something about 'needing a sister' under her breath.

The four kept walking until Adam tripped Chase, sending the super genius into a puddle of water just a few feet away.

Adam, Bree and Leo stared in silence for a moment until they broke out laughing completely ignoring the searing glare their brother gave them as he picked himself off the ground, now soaking wet.

Leo took Adam's hand and lifted it above his head, while his body still rocked from amusement. "A-Adam wins! Ah hahaha-"

Chase's glare zoned in on the boy, "That doesn't count! Adam cheated!"

"Chase Chase Chase, all's fair in love and staring contests." Leo said with a bright smile earning an even deeper glare.

"I can't believe you actually fell for that!" Adam laughed holding onto his sides.

"Yeah," Bree grinned, "Who's supposed to be the super genius again?"

Chase gave them all a glare, shaking some of the dirty water off of his arms before turning around and stomping down the street.

"Chase... Wait!" The three took off after him, each ones eyes glowing with teasing intent until Leo stopped and looked to he side. Staring at the man who was leaning against the school's building.

He had messy brown hair that looked like he just rolled out of bed but still perfect. He wore black jeans with a dark blue V-neck shirt that was folded up to his elbows which stretched over a lean yet muscled frame and a pair of heavy boots. Leo didn't know why, but something about this guy was oddly familiar.

At first the boy thought that maybe he goes to Mission Creek, but he was obviously too old to be in highschool. About twenty five twenty six years old if Leo had to guess. Plus the boy doesn't really remember seeing him around.

The man blinked when he realised that he was being stared at and instinctively dropped the cigarette in his hand quickly stomping it out. 'He hates it when I smoke'

Leo tilted his head to the side trying to figure out where he might have seen this guy, until Bree's voice broke him from his train of thought.

"Leo c'mon, mr. Davenport said he has some new invention to show us today."

The brunette watched the boy go, before letting his gaze drift down to his ruined cigarette and giving a frown. 'Focus damn it, that's not him!'

He briefly thought of lighting another cancer stick when his target came strolling out of the school, looking as smug and evil as ever.

Marcus.

The man gave a sigh as a feeling of nostalgia washed over him and he grinned. "Might as well get this over with."

The man quickly walked up to the teen and grabbed his arm.

"What the-" before Marcus could finish his sentence, he was unceremoniously yanked away from the side walk and back towards the school, to the back of the main building. The bionic teen let out a gasp of surprise as he was thrown against the brick wall.

As soon as he caught his breath, Marcus gave the man a hell damning glare, pushing himself of the wall. The brunette said nothing, just smirked and slid his hands into his pockets.

"Who the hell are you?!"

"You don't know?" The older man scoffed, "I thought you would've figured it out by now, what with the super human intelligence and all."

Marcus froze.

He knows?! How does he know?! The bionic teens heart started pounding in his chest. Was his secret out?

"Oh yeah, I know about your bionics."

But how? The only person who knows about Marcus's bionics is his father and Leo. And that twerp wouldn't tell not unless he wanted to expose Adam, Bree and Chase as well.

"Relax, I'm not here to hurt you."

"Yeah, then why are you here?"

The man pinned the teen under his gaze and spoke with an authoritative voice, "I came here to make sure you don't screw this up for us."

Marcus squared his shoulders and walked up to the man until he was just a few feet away. "Look grandpa, I don't know who you are or how you know about me. But you'd better get lost or else-"

The man snorted "Or else what?"

Rage burned in the teens gaze and his fists clinched tightly. He didn't know what this guy wanted or how he found out about his secret, but he wasn't going to get away with taking Marcus lightly.

Marcus smirked, he's never been allowed to use his bionics against anyone else before for fear of being discovered. But since this guy already knows.

"Or else this."

Then Marcus moved at bionic speed, aiming a fist at the mystery man's face. To the evil teens total and complete surprise, the man sidestepped him.

Sidestepped?

How is that even possible?!

No one's faster than Marcus. Not even Bree!

How did he-

Before Marcus could finish his thought the older man caught his wrist and delivered an elbow to the teens stomach before spinning around and throwing Marcus back into the building behind him, causing the wall to lightly crack under the blow.

Marcus slid down from the wall ending up in a crumpled heap on the concrete ground.

He's stronger too.

"Is that seriously all you've got?" The man gave a heavy sigh, "I always thought I was stronger than that. Guess Leo was right, little twerp."

Marcus was breathing heavily with both his hands braced on the ground until he heard Leo's name and he lifted his head. "Leo...? How do you- who are you?"

"Still haven't figured it out yet? I'm disappointed, I mean isn't it obvious?" The man said clicking his tongue in disapproval, before letting an evil grin spread over his face and arching an eyebrow in a way that made Marcus's eyes go wide with shock.

"I'm Marcus."

A/N: so whatcha think

Please review.