Just a little something I came up with last year while watching The Avengers for the umpteenth time

"This is my bargain, you mewling quim."

"You're a monster," Natasha Romanov's voice quivered.

Loki chuckled mirthlessly. "Call me what you like. I've been called worse, and by better than you. It won't change what's soon to happen. You may as well join me, fight alongside your friend. Or you can stand with these would-be heroes and be killed by the man who spared your life once before."

Natasha whirled around, eyes bright with unshed tears. "You intend to kill us either way. Even those who serve you."

"Do I, now?" He strolled about his spartan prison, then sat and stretched his long legs out in front of him. "What kind of king would I be if -" He shook his head and sighed. "I grow weary of this. Go. Make your plans. Prepare for the oncoming storm, and know that, no matter what you do, it still won't be enough. Oh, I wish I could see the look on your face - on all your faces - when . . ." He grinned wickedly. "No, I won't tell you what's coming, what's going to tear you apart. But you'll wish you had taken me up on my offer." He crossed his arms, shut his eyes and waited for her stammering questions to cease and her retreating footsteps to fade into silence.