Meet the cast of Doctor Who – Boom
Steven Moffat has returned to Doctor Who with his new episode Boom, boasting an explosive story and an incredible cast.
The new episode sees the Doctor (Ncuti Gatwa) and Ruby Sunday (Millie Gibson) arrive on Kastarion 3, a bleak and war-torn planet. The Doctor accidentally steps on a landmine, and has to somehow figure out a way to save himself, Ruby, and an entire planet without moving.
Basically, we’ve got a classic Moffat adventure ahead – tense, gripping, and just a little bit unhinged.
So, as Boom arrives, here’s everything you need to know about that glorious cast.
Doctor Who – Boom cast: Full list of actors and characters
The actors and characters in Doctor Who’s new episode, Boom, are:
Ncuti Gatwa as the Doctor
Millie Gibson as Ruby Sunday
Joe Anderson as John Francis Vater
Majid Mehdizadeh-Valoujerdy as Carson
Caoilinn Springall as Splice Alison Vater
Bhav Joshi as Canterbury James Olliphant
Susan Twist as Ambulance
Of course, more roles could be revealed in the episode, but fans will have to watch to find out.
Ncuti Gatwa plays the Doctor
Ncuti Gatwa as the Doctor in Doctor Who. BBC
Who is the Doctor? The Doctor is a time traveller from Gallifrey. Currently, he’s travelling the universe with companion Ruby and, in Boom, we get to see a new side to him as he faces catastrophic consequences if he even moves a muscle.
Where have I seen Ncuti Gatwa before? Before being cast as the Fifteenth Doctor, Gatwa made his name as fan favourite Eric Effiong in Sex Education. He’s also graced the big screen, most prominently alongside Ryan Gosling in Barbie, and also starred in Apple TV+’s Masters of the Air.
Millie Gibson plays Ruby Sunday
Millie Gibson as Ruby Sunday in Doctor Who episode Boom. BBC Studios/Bad Wolf,James Pardon
Who is Ruby Sunday? Ruby is the Doctor’s newest companion, with Boom marking her first time on an alien planet. It’s likely that, with the Doctor pretty much out of action, we’ll see her step up. Plus, she’s still got a major mystery to contend with – what on Earth are all the strange happenings that she seems to be causing?
Where have I seen Millie Gibson before? Before being cast in Doctor Who, Gibson was best known as Kelly Neelan in Coronation Street.
Joe Anderson as John Francis Vater
Joe Anderson in Doctor Who episode Boom. BBC Studios/Bad Wolf,James Pardon
Who is John Francis Vater? John Francis Vater is a character the Doctor and Ruby meet on Kastarion 3.
Where have I seen Joe Anderson before? Anderson has had many roles across film and TV, with early roles being in Midsomer Murders and Afterlife. In 2007, he starred in the film Across the Universe as Max Carrigan. He’s also appeared in The 27 Club, The Ruins, The Crazies, and The Grey as well as the last Twilight film, Breaking Dawn: Part 2. In 2015, he took over as Mason Verger in Hannibal, and his most recent role was as Laurentz in the film The Last Front.
Majid Mehdizadeh-Valoujerdy as Carson
Joe Anderson and Majid Mehdizadeh-Valoujerdy in Doctor Who episode Boom. BBC Studios/Bad Wolf, James Pardon
Who is Carson? Carson is a character the Doctor and Ruby meet on Kastarion 3.
Where have I seen Majid Mehdizadeh-Valoujerdy before? Mehdizadeh-Valoujerdy, who has also been credited as Luke Jerdy in previous roles, is best known as Jesse Donovan in Hollyoaks, a role he held from 2016 to 2020.
Caoilinn Springall as Splice Alison Vater
Caolinn Springall as Splice in Doctor Who episode Boom. BBC Studios/Bad Wolf,James Pardon
Who is Splice Alison Vater? Splice is a character the Doctor and Ruby meet on Kastarion 3. Showrunner Russell T Davies previously issued an ominous warning about the character, saying on the Official Doctor Who Podcast: “There’s a great supporting cast and there’s a great supporting character called Splice, and one thing I would say in this story is be very careful about saying Splice’s father’s name out loud.”
Where have I seen Caoilinn Springall before? Springall has previously appeared in the 2020 film The Midnight Sky as Iris, the series Citadel as Hendrix Conroy, and the film Stopmotion.
Bhav Joshi as Canterbury James Olliphant
Bhav Joshi in Breathtaking. ITV
Who is Canterbury James Olliphant? Canterbury is a character the Doctor and Ruby meet on Kastarion 3.
Where have I seen Bhav Joshi before? Joshi is known for roles including Anil in Wedding Season, DI Jay Mallic in Granite Harbour, and Anu Kapoor in The Diplomat. He’s also appeared in Vigil, Deadwater Fell, and the Apple TV+ film Tetris.
Susan Twist as Ambulance
Susan Twist as the Tea Lady in Doctor Who. BBC
Who is Ambulance? Not much has been revealed about Susan Twist’s latest role.
Where have I seen Susan Twist before? Fans will already have seen Twist in various Doctor Who episodes including Wild Blue Yonder, The Church on Ruby Road, Space Babies and The Devil’s Chord. At present, the actress is appearing in every new episode in a different role, with various theories floating about regarding who she actually is. Could she be a foe to the Doctor, or potentially a friend? Only time will tell.
Aside from Doctor Who, Twist is known for appearing in shows including Coronation Street, The Archers, In The Flesh, and Doctors.
Doctor Who continues with Steven Moffat’s Boom on 18th May on BBC iPlayer and BBC One.
Check out more of our Sci-Fi coverage or visit our TV Guide and Streaming Guide to find out what’s on. For more from the biggest stars in TV, listen to The Radio Times Podcast.
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