//aaaack I have this idea and it won’t leave me alone...
I’ve mentioned this at least once but the six Infinity stones are all elements the Doctor has. So what if Malekith - any form of Malekith but especially Elf and/or Tennant had joined up with the Avengers during Endgame? What if he too was fighting for one he lost and through the course of this journey--however difficult it might be--he began to rediscover himself, his old self? What if instead of Tony at the end it’s Malekith that swipes the stones from Thanos and sets the world right?
Whichever version it is I know there’s temptation to use this power selfishly; moreso for Tennant. For Elf!Malekith...I think he might consider undoing all the damage and resetting the clock to before Gallifrey devolved into Svartalfheim. However, remembering Rose (because it’s probably Rose) and the life he’s since gained he admits to himself he was finally happy--happy for the first time in his long life and doesn’t want to lose that.
And as far as the Elf!Malekith goes...what if this is what finally leads to regeneration? What if this is what restores his former face and gives this universe an ally it lost so long ago?
Tennant...well, he’d likely want his old face and life as Malekith the Accursed back...but if he’s fighting he’s doing it either because his daughter (Emily) convinced him/was going to go alone or he lost her...and he doesn’t want to lose that either. Besides, what kind of father would he be to ruin her future?
For Tennant, I really think he might die, willingly die but do so more certain of himself than he’s been in ages. (Maybe he would have a chance to regenerate; I’m not totally sure how damaged a Time Lord has to be before it’s too late. I’m also not sure if he’d want to keep fighting through life like he has. I think it’s far more possible dying this way might bring him peace at last. That and his body isn’t as durable as it was as an Elf (though again still stronger than a regular Time Lord’s.) He really might suffer damage beyond repair.
Either way, both versions of Malekith would look Thanos square in the eye, call himself the Doctor and snap his fingers.










