The Deca

The Deca was a group of ten young and rebellious Gallifreyan acolytes at the Prydonian Academy (AUDIO: The Rani Elite) who believed they could change the universe. (PROSE: The Quantum Archangel)

The Fifth Doctor had a dream about the Deca in which he was still in his first incarnation and back on Gallifrey. (PROSE: Divided Loyalties)

Overview
In the Academy, the members of the Deca questioned and debated the profound wisdoms and Ancient Covenants of Gallifrey. The Deca included the First Doctor, the Master, the Rani, Mortimus, and Drax, along with five others. (PROSE: The Quantum Archangel) The Fifth Doctor dreamt that other members were Vansell, Rallon, Jelpax, Millennia, and Magnus.

Of these, Millennia and Rallon were made a part of the Celestial Toyroom, (PROSE: Divided Loyalties) Jelpax became the Coordinator of the APC Net, Vansell became head of the Celestial Intervention Agency, (AUDIO: The Sirens of Time) and the remaining six became renegade Time Lords. v

Confirmed

 * Drax
 * First Doctor
 * Koschei
 * Mortimus
 * The Rani
 * Vansell

Dreamed

 * Magnus
 * Millennia
 * Rallon
 * Jelpax