Alan Tudyk reflected on his career and revealed that there’s a reason why not many people know he played Sonny in the 2004 sci-fi action film I, Robot.

During an appearance on Toon’d In with Jimmy Cummings, Tudyk said that with test screening audiences, he tested higher than the film’s star Will Smith.

“They were doing test audiences with the movie and they score the characters and I got word back, ‘Alan, you’re testing higher than Will Smith,'” Tudyk recalled on the podcast from June 15. “And then I was gone. I was gone. There was no publicity and my name was not mentioned.”

He continued, “I was so shocked, I was like, ‘But wait, nobody’s going to know that I [play the robot].'”

Tudyk voiced Sonny the robot and was motion-captured for the CGI character, saying that he “put a lot into” his performance, adding, “At the time, I was very upset.”