Filming on the Disney+ project was not happening at the time.
The crew member was identified as Juan Carlos Osorio, 41, of Temple City, according to the Los Angeles County Department of Medical Examiner.
Marvel issued a statement: "Our thoughts and deepest condolences are with his family and friends, and our support is behind the investigation into the circumstances of this accident."
The Walt Disney Co. is the parent company of Disney+ and this ABC station.