The voice of Ultron in the Marvel Cinematic Universe, specifically in the movie Avengers: Age of Ultron (2015), is provided by actor James Spader. He also portrayed Ultron physically through motion capture for the film. Director Joss Whedon chose Spader for his "hypnotic voice that can be eerily calm and compelling" while also being very human and humorous. Spader's performance captures Ultron's menacing, intelligent, and disturbed nature rather than using a typical robotic voice
. In other media, Ultron has been voiced by various actors including John Stocker (The Avengers: United They Stand), Tom Kane (Avengers: Earth’s Mightiest Heroes), and Jim Meskimen (Avengers Assemble), among others
. To summarize:
- James Spader : Voice and motion capture for Ultron in Avengers: Age of Ultron (MCU film)
- Other notable voice actors for Ultron in animated series and other media include John Stocker , Tom Kane , and Jim Meskimen
