(PROSE: Engines of War C21) AG

'And now we shall offer you a gift, a role in the coming dawn of the new Dalek empire. You will become our instrument of extinction. You will conceive of new and inventive means by which to spread your gift of death throughout the cosmos. Your rage shall reignite the flames of war, leading the Daleks to victory on a billion worlds. It shall be a beautiful and terrifying reign, and the Daleks shall worship you for it.'

[...]

'The emotion centres of your brain will be neutralised. All thoughts of your prior lives will be excised. Your mind, however, will be harvested. Your creativity will be put to wondrous use supporting the Dalek cause..'
'You don't get it, do you?' said the Doctor, laughing. 'You have no idea. It's because of my emotions that I am who I am. Without them I'd be nothing more than a drone, like the rest of your pathetic race.'
'We shall see, Doctor,' said the Dalek.

[...]

'Behold, Doctor—the Predator Dalek.'
Cinder watched in horrified awe as new Dalek rolled forward into the light. It was twice the size of a standard Dalek casing, although constructed to that same, familiar design. Its skirt was a deep, metallic vermillion, with black sensor globes and grilles, and although mostly inanimate, its appearance nevertheless filled Cinder with dread. The Daleks had clearly been planning this for some time, and she was beginning to get the sense that the Doctor had unwittingly stumbled into their trap.

[...]

The casing of the Predator Dalek hinged apart like doors being simultaneously opened outward, revealing a large cavity within.
Inside, there was a burnished metal seat surrounded by dials and monitors, resembling the cockpit of a small vehicle. It was clearly empty and awaiting an occupant, but unlike the standard Dalek casings she'd seen on Moldox, this one wasn't designed to house mutants Kaleds, but a humanoid figure in the chair.
Fibrous wires and clusters of needle-like probes fought for space on either side of the chair, and a sharp metal spike, fixed to the back of the headrest, glistened with lubricant. This was clearly the Dalek version of a neural interface, to be inserted into the soft tissue at the base of the occupant's skull.
More viscous-looking needles were fixed to the inside of the hinged doors like an iron maiden, waiting to be embedded in the occupant's flesh once they were in situ.
Once entombed, there was clearly no escape. The engines of the casing would merge with the biology of the occupant, fusing to become a single, symbiotic entity. A Dalek.