The crotch of Spider-Man's costume was straining to contain Peter's bulging cock as Felicia's hand stroked it gently. She gazed up at him with a look of carnal lust and his eyes drank in the glorious sight of her luscious tits. "Come on baby," she purred. "Forget about that dirty redheaded whore. She's lost to you now, but I'm all yours." With a supreme effort of will, he pulled away. "Noooo! Not like this!" With a bound, he leapt out of the window and swung away across the city. Felicia looked after him with a look of disgust, then slipped her costume back in place. "Hmmmph! Well have it your way, Spider-Fag! I'll just have to go and find someone who appreciates this." She strutted over to a full length mirror and admired her voluptuous body in its shiny skintight suit. "Did I hear that Kraven the Hunter is back in town? Now there's a man who knows what to do with wild things." She laughed and blew her reflection a kiss, then turned and headed out into the night.
-----
Back in his hell dimension, Mephisto went back to the arcane mirror. He'd kept one of its properties a secret, even from Demon Sue. Not only did it reveal a mortal's darkest side, it also trapped their good and pure essence. The old Susan Storm was gone from the mortal world, but the good and virtuous woman she used to be could still be accessed through the mirror. Mephisto waved a taloned hand and revealed a new scene. Susan Storm-Richards was on all fours in the center of a large stone chamber. She was naked, with iron shackles on her wrists and ankles. Her oiled body gleamed in the light from five blazing braziers which stood at the points of a large pentagram carved into the floor. With an evil chuckle, the hell lord stepped forward, and passed through the glass surface of the mirror.
Inside the chamber, Sue gasped and looked up as there was a grating sound and the huge scarlet form of Mephisto suddenly appeared be fore her. Her thoughts and memories were fogged, as if in a dream. She had no idea how long she'd been a prisoner in this place, but she recognized Mephisto and knew that he was her captor.
"Damn you! Release me!"
"I'm afraid that's not possible. Here you must stay. But if you like, I can tell you all about what your new evil self has been doing in your delicious new body, and what's happening with your meddlesome family and friends. First, allow me to make myself more comfortable."
With that, he ripped his loin cloth away, revealing his massive red cock. Sue gasped in horror at the sight, and struggled against the shackles, but it was useless. She tried to use her powers to rip the manacles apart, but nothing happened. "I'm afraid your powers reside in your mortal body, not your soul, and that's really all you have here. Still, in this chamber we can pretend you still have a physical form. And what a lovely form it is." He crouched down and ran a hand down her toned back and over her broad buttocks.
"Take your hands off me, you vile monster!"
"Don't worry my dear. You have all eternity to learn to appreciate me. And to enjoy the pleasure and pain that I can offer."
Sue hissed through gritted teeth as she felt the rounded bulb of his cock pressing against her asshole. He gripped her shoulders tightly and pressed forward slowly, the head of his cock popping into her after a moment's resistance, and then the shaft slid in, inch by inch. Her head drooped down between her shoulders in submission and her golden hair fell across her face. She whimpered as the chuckling demon lord proceeded to bugger her slowly and powerfully.
----
In the Baxter Building, She Hulk was just about to leave the lab when the door slammed open and there was Demon Sue! She roared, "What the fuck do you think you're doing, bitch??"