Doctor Who
admonition : Spoilers in front forDoctor Whoseason 14 , episode 3 , " Boom . "
Summary
Millie Gibson ’s Ruby Sunday will cease to be the Doctor ’s companion at the close ofDoctor Whoseason 14 , and the incoming actor who will take her place in time of year 15 has already seem in the Disney era of the show . Despite being a mainstay of theDoctor Whoseason 14 stamp , Gibson ’s character is fix to be replaced at some point - presumably near the conclusion of the current run of episodes . Although she is set to depart the show , showrunnerRussell T Davies has already confirmed that Gibson will reprise her role inDoctor Whoseason 15 .
Gibson ’s eventual reappearance will reunite her with Ncuti Gatwa ’s Fifteenth Doctor , and also possibly place her alongside the incoming fellow traveller actor . At present , the cause for Ruby Sunday’sDoctor Whodeparture has yet to be revealed , but it is apparently not an release that will be permanent . Thankfully , Gibson ’s future absence from the show appear to be one that ’s been planned for narration reason rather than as a result of behind - the - scenes drama . Either elbow room , Doctor Who ’s Disney erawill begin its first two seasons with a different Doctor / companion actor conjugation .
Doctor Who has been a fixture on TV screens for 60 eld , meaning there are plenty of stories to choose from when picking out the Time Lord ’s best .

Doctor Who’s Mundy Flynn Is Played By Varada Sethu, Season 15’s New Companion
Sethu debuts in Doctor Who season 14, episode 3, “Boom”
The Fifteenth Doctor ’s unexampled companion inDoctor Whoseason 15 will be act by Varada Sethu . As yet , her character name is unconfirmed . However , the doer ’s debut on the show came inDoctor Whoseason 14 , episode 3 , " Boom . " write by formerDoctor Whowriter / showrunner Steven Moffat,“Boom " serve up as a gentle sequel to other Moffat storiesthat feature the militarized Church that he introduced during Matt Smith ’s sovereignty as the Eleventh Doctor . Although no members of the Church in " Boom " are returning figures , the character of Mundy Flynn is portrayed by Varada Sethu .
niggling is fuck about Sethu’sDoctor Whoseason 15 theatrical role , or whether they ’ll be connect to the worker ’s persona in " Boom . "
Doctor Whoseason 15 presently has no prescribed liberation date , but production has already begun . As such , it ’s bear to get at some pointedness in 2025 . If so , that means that Varada Sethu will have debut onDoctor Whoan full year before becoming a appendage of the principal hurl . Little is know about Sethu’sDoctor Whoseason 15 lineament , or whether they ’ll be link to the actor ’s role in " roar . " Although , given the nature of a mind - flex sci - fi likeDoctor Who , it ’s certainly possible that there is a link between both Varada Sethu character .

Doctor Who Has A Long History Of Casting Guest Actors As Future Companions
Sethu wouldn’t be the first companion actor to cameo as a different character
Varada Sethu is n’t the first actor to appear inDoctor Whobefore being cast as the Doctor ’s companion . For model , Freema Agyeman plays Martha Jones throughoutDoctor Whoseason 3and also made some Edgar Albert Guest appearances as Martha inDoctor Whoseason 4 . However , her earliest role on the show came inDoctor Whoseason 2 , " Army of Ghosts , " where she dally Adeola Oshodi . Adeola was a Torchwood One employeewho perished in the same story , and she was retroactively revealed to be Martha ’s cousin . By doing this , the show rectified the pothole of both characters share the same face .
Similarly , Karen Gillan ’s most famousDoctor Whocharacter is Amy Pond , the first companion of Matt Smith ’s Eleventh Doctor . However , Gillan appeared on the show before she step into the shoes of Amy Pond . InDoctor Whoseason 4 , instalment 2 , " The Fires of Pompeii , " Gillan play a Soothsayer named Mira , mark herDoctor Whodebut a full season before she was cast as Amy Pond .
Since its premiere in 1963 , many actor have starred in Doctor Who as the Time Lord ’s go companion , but not many lasted too long on the show .

The latest Doctor Who series introduces the Fifteenth Doctor, joined by new companion Ruby Sunday.
Doctor Whoalso is n’t beyond casting thespian as the Doctor who have antecedently played other characters within the dealership . For instance , Twelfth Doctor Peter Capaldi played three roles in sum , with the Doctor being his third and last . As well as appearing as Lobus Caecilius in " The Fires of Pompeii,“Capaldi also run John Frobisher inTorchwoodseason 3- aDoctor Whospinoff created by Russell T Humphrey Davy .
Doctor Who Season 15’s New Companion Could Be Mundy Flynn From “Boom”
Mundy could travel with the Fifteenth Doctor next season
Varada Sethu could be unique among previous companion thespian in that she may have already played her biggest fictitious character . In other words , it could be that Sethu ’s character reference in " Boom " is who she is set to play inDoctor Whoseason 15 . If Mundy Flynn is the Doctor ’s companion after Millie Gibson leaves the show , then the dynamic would certainly be interesting . The Doctor and Mundy meet in incredibly fearful circumstance , with the Doctor ’s temper flaring and his spunk close-fitting to the surface .
If Sethu is n’t reprising her character as Mundy Flynn inDoctor Whoseason 15 , then this imply she is play an all original graphic symbol .
There are n’t many companion who first conform to the Doctor at his downhearted ebb , and it would make for a compelling foundation on which the duo could build a friendship . In addition , as a soldier , Mundy would have a very different approach to finding result to various problems . The Doctor is predominantly a peaceful character who always attempt to void dispute when necessary , so this mismatched conjugation would be exciting to research .

If Sethu is n’t recapitulate her role as Mundy Flynn inDoctor Whoseason 15 , then this implies she is playact an wholly original character . However , yield the cerebral nature ofDoctor Who ’s Disney geological era with its hide clues , subtle winks , and 4th - wall breaks , it seems unlikely that the show is repeat its preceding issues of repetition castings . That being said , it does remain a possibility that Sethu move Davies with her clock time on setand simply earned herself a larger use .
Is Varada Sethu’s Early Doctor Who Debut Part Of A Larger Mystery?
Doctor Who season 14 has already teased the presence of unanswered questions
Sometimes , a succeeding companion actor ’s earlier roles are directly linked to their hereafter on the show . Jenna Coleman is a great example of this , debut inDoctor Whoseason 7 , episode 1 , " Asylum of the Daleks " as Oswin . Further down the line , Oswin ended up being powerfully tied to Clara Oswald , in that she was essentially a worldly transcript of the same character . This special electric discharge accept shoes during Steven Moffat ’s era as theDoctor Whoshowrunner . As such , with Moffat return to write " Boom,“Sethu ’s early coming into court as Mundy Flynn could be stick with a similar framework to Clara ’s .
Original Doctor Who star Carole Ann Ford discuss her reaction to a surprising reference to Susan in season 14 , alongside a potential coming back .
There is also the matter ofSusan Twist ’s mysterious cameos . Twist ’s node appearance race throughoutDoctor Whoseason 14 , and even date back to the second of the three sixtieth - anniversary specials , " Wild Blue Yonder . " The oracular thread that connects all the seemingly discrete fictional character is a strong sign thatDoctor Whois in the thick of a complex , hidden plot line . So , it ’s very possible that Varada Sethu ’s role as Mundy is set to " boom out , " but that her futureDoctor Whocharacter can still link up .

instalment
Disney+ Release Date
" Space Babies " & " 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 Death "
June 21
The latest Doctor of the Church Who serial publication bring in the Fifteenth Doctor , join by new companion Ruby Sunday .