Spider-Woman fell out of the air and crashed through a row of shipping crates. Dr. Octopus walked through warehouse on two of his mechanical tendrils, stopping when his shadow was looming over her. His flailing limbs were covered in extra reinforcements to support the weight of the experimental power armor he was wearing.
Gwen sat up in the rubble and shook her head to regain her bearings. A mild headache was about to become the least of her problems.
"This is the end, Spider-Woman," Dr. Octopus declared. "You're going to be the first student in my new training program!"
"You're the only one who needs training," Spider-Woman snorted back. "Someone should teach you how to be less of a cre-…"
She was cut off by a wall of metal tentacles reaching out for her. Two of them wrapped under her arms and over her shoulders. Another hooked her around the waist. They lifted her agile frame easily off of the ground, holding her several feet above Doc Ock.
Gwen struggled against the tentacles and thrashed her legs. One of the doctor's limbs latched onto her hood and pulled the cloth down to her neck. Another more specialized arm slowly rose up behind her, hovered toward the back of her head, and opened its titanium claws to reveal a massive surgical drill.
Gwen never saw it coming for her, but she was awake long enough to feel it. The tentacle punched through the thin fabric on the back of her mask and fastened itself to her skull with a sharp crunch. The tendril vibrated like a jackhammer, then made a sound like a water tank suddenly losing pressure. A few strands of blonde hair slipped down the back of Gwen's neck, along with a couple tiny drops of blood that managed to escape the tight vacuum seal.
Spider-Woman dangled in the air like a limp puppet. Something gradually moved out of the back of her head and through the tentacle's clear vacuum hose. Spongy and gray, it was covered with neurons that twinkled in the tentacle's housing fluid.
It was Gwen's brain. A tiny electrical pulse flowed through the tentacle in the opposite direction, sending minimal electrical signals into her body and barely keeping her alive while she lacked a central nervous system. At best, she could only survive for a few minutes in this state.
The brain was absorbed through the tentacle's winding insulation and ended up in a container between Dr. Octopus' hands. The core of the device spun like a turbine as raw energy poured out of his armored fingers. The rest of his tentacles coiled in and plugged into sockets on every side of the device, injecting swarms of nanites that hotwired the captured organ and reprogrammed its consciousness. Gwen's memories were systematically rearranged or washed away entirely in a grotesque spin cycle.
The tentacles detached from the turbine as it cooled down. The seal opened again, allowing Gwen's brain to start its slow and careful trip back to her hollowed out cranium. The gray matter now glowed in an icy electric blue.
Spider-Woman's brain slipped back into her head. Microscopic surgical tools mended all of the broken blood vessels and reattached the nerves. Her body slowly began to twitch again.
The tentacle cauterized the gaping wound in the back of her head and sealed the missing bone with a metal plate. It opened its claws and detached itself, allowing the other tentacles to lower Gwen back to the ground.
Once she was completely free, Spider-Woman raised her hand to her masked eyes and curiously flexed her fingers. She pulled her hood back up, conveniently hiding the augmentations in the back of her head. Her hair would cover it up when she wasn't in her costume. The plate provided easy access, just in case she needed any secondary revisions.
The eyes of Gwen's mask shrank into sinister pink ovals. She broke into maniacal laughter.
Dr. Octopus laughed back at her.
Gwen laughed some more.
Doc laughed with her.
And then they took over the world together. Or they just did their own version of the Amazing Spider-Man #56 cover.
The End.
Author's note: The other tentative titles I was thinking about using for this were "Brainwashed," "Separation Anxiety," and "The Krang Effect."