Doctor Who: EVERY NuWho Villain And Monster Ranked Worst To Best
109. Kahler-Jex
Appears in: A Town Called Mercy.
Series 7's Wild West episode pitted two antagonists against each other - yet both weren't outright villains themselves.
First up, we have Kahler-Jex, a scientist who was part of a team that created a group of super-soldier cyborgs for the purpose of ending a nine-year war that his people were engaged in. The programme was a success: the war ended in less than a week. However, one soldier was damaged during battle, and didn't follow orders to decommission himself.
The character of Kahler-Jex is basically shoving a mirror up to the Doctor's very own devastating actions in the name of peace and sanity, and their scenes together made for the most engrossing parts of the story.