Exxilon Mutant
![](https://whobackwhen.com/wp-content/uploads/exxilon-mutant-guard-doctor-who-back-when-1.jpg)
The technologically advanced city that once purged its makers manufactured these mutant guards to prevent The Doctor from shutting it down.
Podcast
C072 Death to the Daleks
Sarah Jane hand-cranks the TARDIS doors and narrowly escapes ritualistic murder while The Doctor finds a more interesting temporary companion.