I KNEW IT SEB IS A RECURRING CHARACTER / POSSIBLE VILLAIN.

Summary of Most Dr. Who Episodes (classic & new)
*thing is going wrong in place*
Doctor: *lands in place, usually by accident*
Local: holy shit this thing is going wrong
Doctor: Must fix thing
Companion: Doctor no
Doctor: DOCTOR YES
*gets in trouble*
Doctor: shit
*convoluted plan somehow works*
Doctor: yay we've fixed thing
Companion: let's get the hell out
Doctor: agree
*VWORP VWORP*

Hold up! Chris Addison is in The Caretaker too? Didn’t they announce his role only the final? Do we have ANOTHER potentially villainous recurring character here?

Edit I forgot to add a link to the cast
haissitall:

I don’t know if somebody did it before but I think this gif just had to be made
Why 12 doesn’t approve of hugs

Bumped into this theory while wandering around the Internet:

12 came out of the regeneration extra telepathic. He gave Rupert a whole dream just by touching his forehead and it took him just seconds to see that the captured Teller creature was feeling fine when he put his hand on its forehead.

That’s why he looked so puzzled after Marian kissed him as a thank you after he had saved the prisoners. He just gained the knowledge to figure out who she really was.

That’s also why 12 panics at hugs! And why he looked so uncomfortable after Saibra had hugged him. He probably wasn’t able to avoid direct contact (as she was so happy to say how she hadn’t turned into him) and had just been inside her head without her permission.