Prompt: Charles and Erik are captured and they are torturing Erik to get information out of Charles...?

"Stryker, let us go," Charles pleaded, his voice low.

"Not a chance," Stryker growled, his mouth twisted into a sick smile. "And don't even try getting into my head. You try anything funny and that helmet melts your brain before you can even blink."

Charles wriggled in his chair, trying to see the heavy helmet strapped to his head, but he was buckled down everywhere and couldn't move. "It doesn't have to be like this. Just let us go, and we won't tell anyone where you are, we'll let you be." He stared at where Erik was strapped onto the table, the machinery hooked up to his chest and his head. He couldn't stop thinking if only…if only they hadn't come without backup, if only Stryker hadn't injected Erik with the serum to drain his powers for the night, if only he hadn't gotten Charles into this helmet…

"Let me be?" Stryker laughed, his shrill voice echoing against the dank, stone walls. "As long as you're alive, as long as any of you…freaks is alive, you aren't letting me be. You all need to go. And if you tell me where this school of yours is, I can make it quick and easy. No pain, Professor. Quick and easy."

"I won't. I can't. There are children there," Charles begged.

"Then your friend here gets the electricity, Professor," Stryker snapped, leaning over to the control panel and throwing a lever up.

A whirring started – so low that Charles could barely hear it at first. Stryker grinned at the wires and probes, gazing at Erik, waiting for the machine to gear up. Slowly, the noise began to build. Erik's eyes started to bulge. Charles could just make out muffled gurgling from underneath his gag as Erik began to panic.

"Erik, it's okay. It's going to be okay – "

Suddenly a zap filled the room, so deafening that Charles saw stars. Erik's body arched off the table, his muscles twitching and writhing as the electricity flowed through each and every nerve.

"Stryker, stop!" Charles shouted over the roar. "Stop – you're hurting him – use me. Don't hurt him – hurt me –please–"

Stryker pursed his lips and looked at Charles innocently. "I won't stop unless you tell me where the school is," he spat.

"I can't – I can't – please, you're killing him – "

Stryker forced the lever even further up. Drool drenched Erik's gag as his screams started to match the volume of the machinery. Charles squirmed in his chair, trying desperately to free himself, to help Erik, but he was strapped down too tightly.

"ALRIGHT!" he yelled. "I'll tell you! I'll tell you, just – just stop hurting Erik."

Stryker hesitated, allowing this to sink in, before slowly moving the lever back to its original position. He rubbed his hands together eagerly. "This was just the starter pack, Professor. Know that now, and if you lie to me – if you dare try to fool me…."

"You'll kill him, I know," Charles whispered, his shoulders sagging in defeat.

"No," Stryker chuckled. "No, that would be too easy. If you try to deceive me, Professor – I will make Erik suffer. You think this was bad? This was nothing. Right now, he probably wishes he were dead. That's nothing. I can make him forget who he is. I can make him hate you. I can make him wish he was never born. I can make him into a monster."

Erik was whimpering, his body limp on the table, occasionally convulsing as shock after shock forced itself out of his muscles. Blood stained his hands where his fingernails had dug into his palms. His face was streaked with tears, his mouth smeared with blood from biting his tongue and lips.

Charles couldn't breathe. Every sound Erik made, every moment that Charles stared at him, his world crumbled even more. "I'll tell you everything, Stryker. Just don't hurt him anymore. Please."