Cyber-Leader (Alit in Underland)

A Neomorph Cyber-Leader, (PROSE: Alit in Underland) evolved from one of the hundreds of Mondasian Cybermen created on Floor 1056 of a Mondasian colony ship, (TV: The Doctor Falls) led a group of CyberNeomorphs, including a Cyber-Lieutenant, from Floor 1056 to Floor 0508. Under orders from a Cyber-Planner, it oversaw a mission to prepare the ship's Cybermats for an attack on Floor 0507, and to capture and  so they could be interrogated by the Cyber-Planner to learn how the Cybermen's programmed definition of humanity had been altered, who was responsible for the change, and their purpose in doing so.

Shortly after arriving at Floor 0508, the Cyber-Leader and the Cybermen encountered the Master, Missy and Alit, and after the Cyber-Leader explained their motives, the Cybermen escorted the trio to three lifts and a cell. After the Master and Missy attacked the Cybermen, the Cyber-Leader knocked out the Master and kept him in the cell after the Master destroyed the Cyber-Lieutenant, and ordered the other Cybermen to capture Alit and Missy and to prime the Cybermats for the attack. After destroying Topknot, the Cyber-Leader and its subordinate Cybermen attempted to kill Missy, the Master and Alit, only to be killed itself, along with the other Cybermen, by the Master when he fired his laser screwdriver at the steel ground of Floor 0508 after Missy hacked the floor's weather system to force a rainstorm, causing the resulting electrical surge to destroy the Cybermen; the Cyber-Leader resisted for a few more seconds before falling to the ground, dead. (PROSE: Alit in Underland)