Kroton (Throwback: The Soul of a Cyberman)

Biography
Kroton was a Cyberleader who was among the invasio of Mondas he was different to other cybermen because he had emotions. He helped some Mondasiens escape the Cybermen nad escaped himself in a ship with low fuel. After diffifting alone in space he deactivated.

A cruise ship traveling through space in a time loop found Kroton's ship and reactivated him. On this ship he made some new freinds and freed them from the time loop. However when he did this all the people aged and died because the effects of aging finally kicked in, leaving Kroton on his own yet again.

After that Kroton traveled around space battling evil such as such as Sontarons. Kroton then met The Eighth Doctor and his compainon Izzy on a space ship Kroton then joined the doctor.

Kroton left The Doctor after a battle with The Master to become the center of the omniverseal spectrom