Swarm
Swarrm was a dangerous being imprisoned in a containment chamber by the Division. He had the power to drain the life force from Time Lords and use it to fuel a regeneration of his own.
Appearances
The Halloween Apocolpse (TV)
War of the Sontarans (TV)
Appearances
The Halloween Apocolpse (TV)
War of the Sontarans (TV)