Disclaimer: I don't own anything including Wanted (2008) or X-Men: First Class (2011)
Based on this kink meme prompt shamelessly stolen for summary: Charles has a killer in his head and he's not afraid to use him. Wesley doesn't mind letting Charles take the reigns in between the fun parts as long as he gets some action so it all works out. Cue BAMF!Charles/Wesley action?
XXX
The first clue that something was amiss with Charles Xavier, Erik discovered on his second night stay with the CIA.
"-Stryker? You can't mean Agent Stryker, right?" It was an agent's voice, the one who ran the facility, sounding just around the corner. Erik curiously stopped to listen. Perhaps it had something to do with Shaw. The doctor had already gotten his hands on one U.S. government official, who's to say he hadn't gotten his hands on another?
"Exactly him, and..." the other man paused hesitantly here. Charles Xavier, Erik's mind provided. Erik had only known the man for about a day and a half and he was already intimately familiar with the slight turns and lilts of the telepath's voice. It helped that Erik had yet to rid it from his mind since the first day he heard it there.
"...and his son William as well," said Charles sounding a bit regretful. "I thought it would be best to inform the CIA before I carried out the order considering their affiliations." There was another pause in which the telepath must have read the other's mind for the next moment was accompanied by a wave of faint, almost ticklish, pressure against Erik's mind. He'd been caught out, Erik knew when he felt the sensation of tingling laughter that followed after.
"No need to worry yourself." Erik couldn't tell if the telepath was addressing him or the agent. "This is a rather unusual case from my experience. Names from the CIA don't come up often." There was a sound of someone patting a shoulder. "Now if you'll excuse me, there is another matter I must attend to."
"Of course."
Erik sensed the metal of the pen tucked in Charles pocket more than he heard his approach. The younger man was unnervingly light on his feet. "It's rude to eavesdrop, my friend," said Charles turning the corner but the reprimand lost much of its affect to bright red lips turned up in amusement.
Erik didn't comment, instead waiting for the question of 'How much did you hear' because surely he'd walked into something he wasn't supposed to, even if Erik hadn't heard that much. But Charles merely shook his head and touched to fingers to his temple. Telepath, of course.
"It was nothing about Shaw," answered Charles to his silent question, "It's a side job of mine actually. Nothing you need concern yourself with." Erik wanted to ask more but Charles tone brokered no room for argument or inquiry and if there was the slightest compulsion attached to Charles' words, Erik hadn't noticed, and simply let the matter drop.
"Care for a game of chess then?"
XXX
The second clue that something was a little off with Charles Xavier, occurred in Russia, as Erik single-mindedly tore his way through the Soviet general's house.
"Erik!" Erik only dimly registered the gasping man behind as a non-threat before he dismissed him altogether, knocking out another soldier by the butt of his own gun. "Erik, wait up." Three more soldiers came this time, and he used the metal of their straps and buttons to slam them against the wall. Erik didn't even slow down.
It was only when he heard, "Erik you asshole, wait up!" that he halted. It was the shear absurdity of hearing such a foul word pass the ever charming, perfect, English gentleman's lips that made Erik pause to see if was hearing things.
"Finally," the other huffed, slowing down to rest his hands on his knees.
"Charles, did you-"
Two rifles were about to turning the corner behind them, more importantly, behind Charles, and Erik fingers were already half-curled to crush the men wielding them. He didn't have to. In a burst of action that Erik hadn't thought the small telepath capable of, Charles managed to grab the end of one gun to lever it straight into one soldiers face and slip behind the other to bash their head with a small handgun he usually carried around.
"I'm sorry, what?" barely winded now as if Charles hadn't just knocked out two grown men twice his size.
A dozen questions popped into Erik's head. Did you really...? Did I hear you correctly when you...? How and when did you learn to...? Instead he settled for, "Are you all right, Charles? You sound a little...off."
An odd expression flashed across Charles' face so fast that if Erik blinked he would have missed it. "I'm perfectly fine. I'm more concerned about you rushing off to face a fuc- telepath without any protection, my friend."
Erik would have bristled at the mention of him needing protection from anything if he wasn't so focused on Charles' mannerism. The 'my friend' was more an afterthought than a natural fixture that Charles usually made it out to be and...
"Well you can proceed as you were, Erik. At least now that we are together, I'll be able to intervene if Frost attempts any telepathy on your person." And no, it was Charles speaking in the Queen's English again. Perhaps it was stress that made Charles revert to the American accent earlier. He had lived in the states since he was eight years old after all.
They barged into a man making love and whispering sweet nothing to the air.
"Nice trick."
XXX
The third clue that something of another side that existed within Charles Xavier, was very brief and happened right after they heard news of an attack on the children, the CIA agents lost were only an afterthought.
Raven was sobbing in her hands. Alex was trying to stay strong focusing all his concentration on a point on the wall. Hank was staring at the floor. And Sean looked to the side looking as if he wanted to be any place but here. Erik though, had all of his attention on the telepath beside him and it was because of this that he was the only one to catch it.
Charles' face was something murderous. It was as if he was a whole other man altogether. Fist clenched until knuckles were white and a certain tension that gave the impression of viper poised to strike. Fascinating as it was though, this transformation, Charles was beginning to project murderous intent and Erik had to do something. He grabbed the telepaths hand. It appeared to be the right choice. For in the next instant, the rage that seemed so alien to Charles seemed to drain away, red crescent marks imprinted on his palms the only evidence it had ever been there.
"They're only children, Erik."
XXX
The fourth clue that something was seriously strange with Charles Xavier was the loom that was kept running all throughout the night and had its own room set aside for it.
Charles and Raven specifically said that everyone had free reign of the home, for their home was everyone's home they reasoned, and that no room should be barred to them, contingent only on the fact that they try not to break too many of the Xavier household's antiquarian pottery and such. History was a bit harder to replace than standard walls and windows. So Erik took it as permission to explore while he took one of his early morning walks.
It was the delicate weaving and bobbing motion of so many intricate metal parts that had drawn him to the room. Erik had sensed it immediately on the first day of their stay but Raven had not deemed to include it in her tour of the house, probably to not tempt the boys into doing some irreparable to the delicate machinery.
As to what purpose it served to the Xavier's though was beyond him. They were very well off, judging from the sizeable estate, and hardly need to make their own clothes and there was only one machine to produce the cloth so it wasn't a matter of business. An heirloom of a sort then?
"You could say that, my friend," Charles said as he strolled in hands behind his back, walking around Erik towards the loom itself.
Get out of my head.
"Apologies, you're curiosity was rather loud. I couldn't help but overhear." Charles was now extending a magnifying glass Erik hadn't noticed in his original inspection, there were too many metal parts to differentiate all of them, over the loom.
Charles continued on, "I obtained it from some old associates of my father and now it's just something I feel like I should continue in his stead."
Erik vaguely wondered how Charles father had died but dismissed it as too personal a question to ask. Although it didn't stop him from thinking this hobby of Charles' was a tad silly.
"You intend to save the world one square foot of linen at a time Charles?" Erik asked.
"Something like that," said Charles. He finally looked up from whatever he'd been doing inspecting the cloth and stood up, "Now if I do recall correctly, you're the only one I haven't gone through proper training with yet. Any ideas in mind, my friend?"
Erik thought of the gun he felt on Charles' side. "I have one."
XXX
The fifth clue that something was very wrong with the perfect picture that was Charles Xavier, was the week he had disappeared with a note saying he'd gone on a job of a sorts with a man named Wesley Gibson.
"Who's Wesley?" he asked Raven. If anyone should know, it would be Charles' sister who'd been by his side for over half his life.
"You sound jealous," Raven smiled amused, "and here I thought you only had eyes for me." She trailed fingers up his chest teasingly before he caught them in their path none too gently, loosening his grip immediately when he saw her wince. Erik rubbed them in apology before letting go.
"Concerned is more like it. Shaw is still out there and we are not prepared. The human's on the verge of nuclear war. I hardly think Charles is the type of man to disappear in such a time of crisis on a whim. Now tell me, why is he gone and who is Wesley?"
Raven bit her lip before conceding, "You're right. Charles wouldn't leave unless it was extremely important. But it is, it really is." The weight of Erik's glare pressured her to go on. "It has to do with his other job, not as a professor, the one his original father used to do..."
"The one with the loom," Erik questioned doubtfully but Raven took it as a sign that she had already said too much on the matter and clammed up. Erik sighed, "and Wesley?"
"Wesley Gibson is...," Raven trailed off, stalling for what Erik didn't know but he allowed it anyway, "is his partner for these jobs. Without Wesley, I don't think Charles could ever...They're just very close, you see." Another vague explanation, Erik was going nowhere fast.
Raven had finally had enough. "I don't know!" she threw her hands up in frustration, "Just go ask Charles when they get back!"
News came back a week later, of Stryker and his son's assassination during their trip to the Lakes.
XXX
The final clue that Erik didn't truly know Charles Xavier, was when Charles came back and it wasn't Charles at all.
"You're not Charles."
"What the fuck was your first clue?