Ravulox

The Ravulox was an android taking advantage of the Redacted Distortion crisis that was removing anyone who knew of the Doctor.

When Rani Chandra was communicating to Cleo Proctor via hologram, the Ravulox located her. The Ravulox then discovered the source of the call as London, England, began to teleport, and expressed that all humans had to die. (AUDIO: Hysteria, Lost)

The armour of the Ravulox ended up at UNIT HQ. (AUDIO: Recruits) Once the Redacted virus crisis was resolved the Thirteenth Doctor stated she was going to have stern words to the Ravulox. (AUDIO: Salvation)