Pictures showed him wearing a loose-fitting grey suit with a white button-up shirt, suspenders and a short green tie.
He wore a large brown brimmed hat, which covered much of his face, and some black formal dress shoes on his feet.
While his character Thomas had an intimidating stature, his new character appears to be rather frail-looking, and the change to Cillian’s face caused by the weight loss was noticeable.
Last month, Cillian was also spotted filming scenes for Oppenheimer in Princeton, New Jersey.
