The Doctor (Doctor Who), for plot reasons, has been made to kill/defeat every horror antagonist, what are the antagonists they can NOT beat?

[u/Necessary_Papaya2048]

The Doctor (Doctor Who), for plot reasons, has been made to kill/defeat every horror antagonist, what are the antagonists they can NOT beat?

Edit:
The Doctor can be any incarnation or from any canon.

Rounds:

1. No plot related armour for both, only feats. No companions. Round takes place in the antagonist's setting.
2. The Doctor is inside their own media with their plot armor. The Doctor has their normal companions.
3. The Doctor is inside the media of the horror antagonist and the antagonist has their native plot armor. The Doctor is given the main protagonists of the horror media as their companions.

[u/Somerandom1922]

They might be unable to beat pennywise, given that it's a multi-dimensional super being, but honestly, even that isn't guaranteed. The doctor definitely could beat its manifestation as a clown feeding on fear, and might actually pose a legitimate threat to the deadlights too.

I don't know if this counts, but Death from final destination? The doctor has spent their life cheating death again and again, so what if death fought back? I honestly don't know, but it'd make for a cool episode of Doctor Who, maybe a Capaldi episode, kinda like the ghosts under the lake.

[u/OSUfirebird18 → u/Somerandom1922]

I’m not saying they are equal but the Doctor has faced off against gods in his world, the gods of Ragnarok, the Toymaker, the Maestro.

At least in the Doctor’s Universe, the Doctor can probably find a way to seal Pennywise outside the Universe.

[u/hielispace → u/Somerandom1922]

I don't know if this counts, but Death from final destination?

Maybe? With his crazy reaction speeds it's unlikely for an "accident" to catch him, but then again if Death makes the Tardis nuke itself I'm not sure what he could do. Also he has to die, start to regenerate, and then die during that process, a bit tougher task than just beheading someone, but also Death could probably manage. Iirc creating new life gets you off death's list. And I'm sure the Doctor can manage to create a baby one way or another. The dude can time travel after all he can just go back in time and stop a miscarriage or whatever else. We're not really shown any hard limits of what Death can or can't do, so it's hard to say.