Doctor Who
admonition : spoilers ahead for Doctor Who time of year 14 , episodes 1 & 2 .
Summary
It ’s goodbye bi - propagation afterDoctor Whoseason 14 affirm the titulary Time Lord can never again split themselves as a manner of avoiding regeneration . Doctor Who ’s regenerationrule book has always been somewhat flexible , but the 60th day of remembrance changeover between David Tennant and Ncuti Gatwa ripped up said rule volume and convulse it into the canon nihility . Rather than renewing his trunk , the Fourteenth Doctor separate into two physically distinguishable entities - Tennant ’s Fourteenth version and Gatwa ’s Fifteenth .
Doctor Whohas not even started to explain how bi - propagation really put to work . Whether the Fourteenth Doctor still possesses the power to rejuvenate stay on undecipherable , and the impact of bi - generation upon past Doctors was called into question after Russell T Davies suggested every past Doctor retroactively revived . question even give ear over exactly what promptedDoctor Who ’s initial bismuth - generationin the first place . One vital question has last been answered , however , byDoctor Whoseason 14 , instalment 2 , " The Devil ’s Chord . "
MD Who has been a habitue on video screens for 60 years , meaning there are peck of stories to choose from when picking out the Time Lord ’s best .

Ncuti Gatwa’s Fifteenth Doctor Rules Out Any Future Bi-Generations
One Bi-Generation Was Enough For Doctor Who
Doctor Whohas very explicitly rule out the prospect of bi - generation happening again . When Ncuti Gatwa ’s Fifteenth Doctor is panic over facing thepowerful newDoctor Whovillain Maestro , child of the Toymaker , Ruby essay to reassure her Time Lord friend by pointing out how he escaped death when the Toymaker was tormenting Earth in " The Giggle . " To this , the Doctor replies , " It tear my soul in half . I ca n’t survive that again . "
The key wording here is Fifteen ’s firm averment " I ca n’t hold up that again . " The call fundamentally turn bismuth - generation into a one - clock time john . No future version of the Doctor will have the likely refuge mesh of bi - propagation , and if the process did somehow resort down the road , the var. would wipe out the Doctor for good .
Doctor Who Now Needs To Explain Why The Fourteenth Doctor Bi-Generated
The Who Should Start Talkin' ‘Bout Bi-Generation
WhileDoctor Whoseason 14 , installment 2 ’s " ca n’t go that " line does answer one great bi - coevals mystery , the Fifteenth Doctor claiming that repeating the trick would kill him frustratingly stir further question too . Without further detail about the mechanic of the process itself , there is no way of life to account for why the Fourteenth Doctor survive atomic number 83 - contemporaries , but exactly the same thing happening again is now considered fateful for all future incarnations .
Without a clean initiation , it is impossible to say why bi - atomic number 83 - generating would kill the Fifteenth Doctor .
It may be that a Time Lord ’s soul is quite happy to be halved , but any modest fraction - third base , quarters , etc . - are a step too far , causing the Doctor to fell in a puff of logic . Another potential explanation is that , just as Time Lords are kick in a limited turn of regeneration , they are only allocated a maximum of one bi - multiplication , with any more beyond that considered impolite . By not providing an solvent , Doctor Whorisks the matter of bi - generation survival looking like a matter of artificial convenience : Fourteen survived because it was convenient for him to do so ; Fifteen will die because that convenience has expired .

It is also possible that the Fourteenth Doctor ’s bi - generation was because of his conflicting desires to both settle down and carry on adventuring .
The solution to this problem is as childlike as supply more perceptiveness into why Fourteen atomic number 83 - generated in the first berth , as that question was left turbid after the 60th anniversary peculiar . During the succession itself , Ncuti Gatwa ’s Doctor referred to bi - contemporaries as a Time Lord myth , giving the imprint that it ’s an extremely uncommon phenomenon only a favorable few Time Lords across history have experienced . Another possibility suggestsDoctor Who ’s Toymaker have the bi - generation , as his presence loosen the convention of reality . Without a decipherable trigger , it is impossible to say why bi - bi - generating would drink down the Fifteenth Doctor .
Doctor Who Season 14 Subtly Answers A Second Big Bi-Generation Question
The Doctor Is Half The Man He Used To Be
WhenDoctor Whofirst dropped bi - generation into the 60th day of remembrance specials , it failed to make completely open whether the Doctor had multiply - like an in - sign Gallifreyan dry cloning service - or separate - like cutting a toothsome bar in half . When Ncuti Gatwa ’s Fifteenth Doctor states " it charge my soul in one-half , " he all but confirms the latter is what happened . The Doctor was , prior to the net 15 minutes of " The Giggle , " a whole individual . Bi - generating then tore them apart , leavingone half of the character ’s soul inside Fourteen and the other half inside Fifteen .
This differentiation is important because it correct up the possible action of those two one-half becoming whole again one day . As it stands , Doctor Who ’s current protagonist is apparently missing 50 % of himself . At some point in the near future , he may encounter a situation that requires the full 100 % , and so will be forced to unify with the Fourteenth Doctor in parliamentary procedure to become complete . This might even be howNcuti Gatwa’sDoctor Whoendingplays out , andthe Fifteenth Doctor can only reclaim into the Sixteenth by getting the other half of his psyche backfrom David Tennant .
Episode

The latest Doctor Who series introduces the Fifteenth Doctor, joined by new companion Ruby Sunday.
Disney+ Release Date
" Space Babies " and " The Devil ’s Chord "
May 10

" Boom "
May 17
" 73 Yards "

May 24
" Dot & Bubble "
May 31

" Rogue "
June 7
" The Legend of Ruby Sunday "
June 14
" Empire of decease "
June 21
The late medico Who serial publication introduces the Fifteenth Doctor , joined by newfangled comrade Ruby Sunday .