Dalek Time Controller: Time War era
With the creation of the first Time Controller - a true vortex-sensitive Dalek - the Dalek Empire finally came close to matching the power of the Time Lords. Able to discern means of altering the past without compromising the Dalek species, the Time Controller not only masterminded the construction or acquisition of immensely powerful temporal technologies, it used its understanding temporal mechanics to duplicate itself over and over. The Time Controllers became the guiding hand on every front of the Time War, working as one to forge a Dalek-dominated universe.
And here's the model! I did consider, briefly, bringing in more elements of the Red Supreme, but the descriptions in the book suggest it largely resembles a normal bronze drone, the gyro rings aside.
[EDIT: Updated model and colours for greater accuracy]
The Dalek Time Controller was created by Nick Briggs and first visualised by Brian Williamson (brianaw.deviantart.com/)
. This version is based on that design and the model created by Big Finish's in-house artists, together with the descriptions provided in the novel, 'The Dalek Generation'.