Tardis

Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.

READ MORE

Tardis
Advertisement
Tardis

You may be looking for the Master.

"O" was a member of the British Secret Service agency MI6.

Biography[]

According to the Thirteenth Doctor, "O" was one of MI6's best. He had previously been a champion sprinter, something which was noted in his official file.

However, "O" was ambushed and killed by the Spy Master before his first day, being miniaturised using a new and improved Tissue Compression Eliminator.

The Master kept "O" 's body in a matchbox, which he showed to the Thirteenth Doctor to confirm his identity. He stole "O" 's identity and set himself up in MI6 in his name, maintaining the charade even as far as "O" 's retirement to the Outback, before eventually revealing himself to the Thirteenth Doctor as his Kasaavin masterplan reached completion. (TV: Spyfall)

Appearances[]

Advertisement