{(Prologue- Know Thy Enemies)}

The masked man sat back and carefully watched the huge screen in front of him.

The screen played a video clip of a battle. It was Robin vs. the other Titans.

"This was when I had made him my apprentice." The man said.

"I know."

The voice came from a cloaked woman standing next to the screen's controls.

"Just watch."

The clip continued on, to show the Titans following Robin up to the roof of the WAYNE building. Cyborg was approaching Robin with his palms in the air.

"Look," recorded Cyborg said. "I don't know what's going on, but we don't wanna fight! We just wanna talk!"

He was cut off from saying more when Robin jumped into the air and kicked him upside the head. The young woman paused the clip.

"You can see that we cannot use that one. Robin did not even hesitate to attack him. They are close friends, but not quite close enough."

The man nodded. "I see. What about the green one?"

The girl selected a different film clip and played it.

Now, the screen showed Beast Boy, cracking his knuckles. He transformed into a giant ape and lunged at Robin. But the boy wonder simply swung a rope around the ape's wrist and flung him into the giant "A" on the "WAYNE" sign. The screen paused.

"Again, no hesitation. And, before you ask, we cannot use the telepath either."

She inserted yet another video. This one showed Raven using her telepathic powers to break apart the thermo blaster on Robin's arm. He quickly retaliated: grabbing her by the hood and throwing her to the ground. The video stopped.

"Slade, don't you see? There is only one left."

Slade was doubtful. "But, why should the alien girl be any different from the others? Did he not attack her too?"

"Yes. But watch."

The young woman put in one last clip. This one showed Robin and Starfire standing a mere two feet away from each other. Starfire had a starbolt formed on her fist, and Robin had a thermo blast ready to fire. Starfire suddenly lowered her hand.

"Robin, you are my best friend. I cannot be in a world where we must fight. If you are truly evil, then go ahead. Do what you must."

Robin dropped his hand. His face was a jumble of emotions.

"Star, I-"

The screen went blank.

The mysterious girl walked out of the shadows of the control panel. Her white cloak swished back and forth as she walked, and her dark boots clicked as they hit the ground.

Slade motioned for her to come closer, and she walked up next to his chair.

"You see; Robin was willing to risk severe punishment from you, because he didn't want to do the girl any harm. The only time he actually attacked her was when you were threatening her life. He would do anything for Starfire, I'm sure of it. And I don't think he would stop at any length to get her out of danger. My plan… is practically foolproof."

"Well…" Slade said, turning his chair around to face her. "I only ask require two things of my employees-"

"Partner." The girl interrupted him. "This will be a partnership, Slade."

"Fine. I only require two things of my… alliances. One: that you have a good plan. As far as I can see, the plan you've formed is flawless and simple. Two: that you are powerful enough to actually pose a threat to the Titans."

"Feh. That is not a problem. I am more then a "threat" to those titans."

"Prove it."

"Fine."

The girl took off her cloak and set it on the ground. Only now was Slade really able to fully examine the young woman. She was wearing a pale yellow halter-top and short, black, leather shorts. Her hair, which fell down the length of her back, was a deep shade of rose red. Her yellow, cat-like eyes were looking at Slade in anticipation.

"Slade, stop staring. Compared to some of the other… characters around here, I don't look nearly strange enough to be stared at like that. Now, what do you want me to do to prove my strength to you?"

Slade glanced around his newly built lair. He stopped looking when he spied a cardboard box, (A/N- New lair! Moving box! Get it?! Probably not…) packed with the twisted remains of his decoy chronotron detonator. He pointed to it.

"There. Inside that box is what's left of my chronotron detonator. Even though it was a fake, it's still a very heavy heap of nearly unbreakable metal. Demolish that with a single blow, and you're hired."

The young woman looked at it, then turned back to him with an amused smile. "Is that all?"

She casually lifted up her hand and pointed her index finger at the box. Slade watched as a bright orange orb of energy formed at her fingertip. It was only a small amount of energy, but he could feel the massive amount of power emitting from it.

A quiet hush seemed to fall over the room.

"Spirit Gun." The girl whispered.

The bullet-sized energy was released from her finger. In a fraction of a second, it hit the box of metal- sending a massive explosion of energy through the lair. The sudden wind blew Slade further back into his chair, and he had to shield his face from the stay bits of metal flying towards him.

But the mystery girl just stood there; calm and assured. Her hair was flying back behind her in the wind, but otherwise she looked just as she had before the box exploded.

When the room was finally calm again, Slade lowered his arms, and looked back at the box of metal. All that was left of it now was a small pile of dust on the floor.

The redhead turned back to look at Slade.

"Is that powerful enough for you, Slade?"

Slade smiled. "Yes. I think we could make this work, Agent."

Slade held out his hand to her, and the girl shook it.

 "Agent? Please, Slade, call me Sayuri."

((A/N- I do not own the Teen Titans. Neither do I own kowaii Slade-san. I do own Sayuri (SAY-YOUR-EE), though. She's an OC I created in my spare time. I stole her move (the Spirit Gun) from Yu Yu Hakusho. She knows a lot more, so I'll probably have to add them into my disclaimer soon. Oh… and so you know… I was a little reluctant to add Sayuri into the fic because she has long red hair… kinda like Starfire's. That was not the intention AT ALL when I was creating Sayuri, and for the record, her and Starfire are not related in any way, shape or form. So… yeah…))