- Crosses the Line Twice: The Master gassing the entire cabinet to death? Creepy and a tad bit scary. The fact that he did so after insulting them all in an over-the-top way, and one of them calling him insane, only for him to respond with a grin and double thumbs up? Black Comedy.
- Fridge Brilliance: Before the Master gasses his cabinet to death, he calls them all disgusting traitors and talks about how they abandoned their own parties when his got the upper hand. Where the Fridge Brilliance comes in is that during most of his appearances in the classic series, the Master's M.O. was to team up with some other alien or villain to attack the Earth, only for the other villain to betray him and force him into an Enemy Mine with the Doctor. Out of all people, of course he would choose traitors to satisfy his bloodlust.
- Fridge Horror: The Master mentions how the Time Lords thought he'd be the "perfect warrior" for the Last Great Time War. With the knowledge that there was an incarnation of the Doctor who fought in the Time War, otherwise known as the "War Doctor", and how he was feared by both sides, it raises the question of the amount destruction the Master could've brought if he never fled to the end of the universe.
- Additional Fridge Horror: We have only seen very few things scare the Master, but never to extent of what the Cruciform does. And yet nothing is revealed about the Cruciform, making you question what the hell it exactly is. The fact that it apparently didn't scare the War Doctor also raises some disturbing implications about what he did back in the Last Great Time War.
- "Funny Aneurysm" Moment: The American President's remark about Britain electing "an ass". Sort of self-aware humor in 2007. In the late 2010s, however...
YMMV / Doctor Who S29 E12 "The Sound of Drums"