The following article contains spoilers forThe Book of Boba Fett.

WhenThe Mandalorianbrought back Luke Skywalker few fans would have anticipated what Disney had in store for the future. Yet,The Book of Boba Fettmay have blown all expectations out of the water with a special Mark Hamill cameo that didn’t even feature the actor at all.

Despite his prominent role in theStar Warssequel trilogy and his familiarity with the force, Hamill can’t simply de-age himself back to his twenties to play the Jedi Master, meaning Lucasfilm and its special effects branch had to employ some Deepfake wizardry to pull of that first cameo. Regardless of the mixed reception that Luke cameo got,The Book of Boba Fettfeatures amuch-improved Master Luke Skywalkerthanks to some savvy hires, though Hamill’s voice is what’s now drawing fans' attention.

Grogu Baby Yoda and Luke Skywalker in Book of Boba Fett

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As Slash Film reports, whenever Luke Skywalker speaks inThe MandalorianandThe Book of Boba Fett, it’s not Hamill’s real voice that the audience is hearing. Instead, the output of a highly advanced voice synthesizer called Respeecher is responsible for Skywalker’s voice. This was first uncovered in Disney Plus' own featuretteDisney Gallery: The Mandalorian, where experts explain that “It’s a neural network you feed information into and it learns” from old material featuring Hamill’s voice around the time the originalStar Warstrilogy came out.

The decision seems somewhat puzzling given Hamill is an incredibly talented voiceover actor in his own right, plus the fact that he always seems willing to collaborate with the franchise. Whether it’s down to schedule conflicts, budget reasons, or simply the studio’s interest in test-driving this novel software at the highest level, Disney has still not addressed why this particular choice was made.The Book of Boba Fettis already having a hard time winning over viewers.

Nevertheless, while the quality of the young Hamill’s digital recreation has gone up considerably enough to put that matter to rest, his dialogue leaves a lot to be desired. Indeed, Hamill’s voice sounds quite on point, but the problem is that the speech software appears to take away a lot of what the original Luke or any other actor could bring to the table with their performances, such as the tone or inflections that really bring the dialogue to life.

The small nuances in Hamill’s repurposed voice were perhaps easier to forgive inThe Mandalorian’s short cameo, however, the extended banter between Luke and Grogu makes the flatness in the former’s voice stand out a lot more. If Disney truly wants a Luke Skywalker spinoff, it might be time to find someone else to play the legendary Jedi,even if it’s not Sebastian Stan.