Doctor Who showrunner Russell T Davies reveals that the regeneration between David Tennant and Ncuti Gatwa in the 60th-anniversary special "The Giggle" was almost a much more visually chaotic and violent sequence than what would be seen on screen. The final episode brought the show's milestone celebrations to a close, as Tennant's Fourteenth Doctor battled the Toymaker (Neil Patrick Harris) over the fate of the human race. In the final act of "The Giggle," the Fourteenth Doctor is shot by a beam of galvanic radiation, but rather than changing into his Fifteenth incarnation (Gatwa), the Doctor is divided into two beings by the fabled bi-generation, as both the Fourteenth and Fifteenth Doctors stand together.
With Doctor Who's shocking 60th-anniversary bi-generation twist taking audiences by surprise, Davies revealed more details about it with producer Phil Collinson and Tennant during BBC iPlayer's "The Giggle" commentary. He said the sequence could have almost had a more drastic visualization. When discussing the back-and-forth on how they brought the bi-generation to life, Collinson stated that the separation would have initially seen the two Doctors physically torn apart in the process, something Davies and Collinson agree would have been too violent. Check out Davies, Collinson, and Tennant's full explanation below:
Russell T Davies: "Oh my god, the fussing over this special effect was..."
David Tennant: "Was it difficult?"
Phil Collinson: "Oh, it was really difficult. Well, this particular shot, as well. It’s quite funny. It’s like a bubble, isn’t it? Like an amoeba. And there were versions where you kind of ripped apart."
Davies: "It was too violent!"
Collinson: "Some violence."
Davies: "It was too liquid sometimes. It was… It was too thin."
Collinson: "I wanted to put a popping cork on, but they wouldn’t let me."
Why A Calmer Regeneration Works Best For Doctor Who's 60th-Anniversary Storyline?
Doctor Who has seen several regeneration processes where the transformation has caused pure chaos — sometimes for better and sometimes for worse. In Tennant's final Tenth Doctor adventure, "The End of Time," the Time Lord regenerates inside the TARDIS after a farewell tour, leading to the vessel sustaining heavy damage from the regeneration energy, sending it crashing into a garden in the village of Leadworth, and requiring time to repair. Matt Smith's Eleventh Doctor would weaponize this energy against a Dalek saucer in "The Time of the Doctor," and Peter Capaldi's Twelfth Doctor would also damage the TARDIS in his regeneration, which left Jodie Whittaker's Thirteenth Doctor separated from her ship.
Doctor Who 60th Anniversary Specials Ending Explained
The final Doctor Who anniversary special, "The Giggle," is a regeneration story like no other - and its ending sets up some tremendous adventures.
With so many violent, destructive regenerations, the handover between Tennant and Gatwa not only marks a welcome change, but it works better for the tale "The Giggle" and prior Doctor Who 60th-anniversary specials. The Fourteenth Doctor is faced with the question of why he is still running and not taking the time to come to terms with his previous travels, which bi-regeneration will allow as the Fifteenth Doctor continues the adventure. As such, the two Doctors taking a moment to work together and compartmentalize these two phases of their lives by pushing each other apart is a fitting encapsulation of what this moment means for the Doctor.
Bi-generation is a never-before-seen scenario that has raised dozens of questions about what the future of Doctor Who could be. As such, not only is a more peaceful process fitting with the 60th-anniversary specials' story but having a less violent separation between Tennant and Gatwa allowed audiences to be fully shocked by the mere implications rather than its visuals. While Gatwa's Doctor Who adventures will begin in the Christmas special, bi-generation will remain one of the show's pivotal moments.
Doctor Who: The Giggle is available on Disney+ for international audiences, and BBC iPlayer for UK viewers.
Source: BBC iPlayer