Home People Steven Warner Steven Warner movies Steven Warner movies Steven Warner Movies (4) Mary Poppins Returns (2018) As Special Effects Supervisor. He was 18 years old The Martian (2015) As Special Effects Supervisor. He was 15 years old The Devil's Double (2011) As Special Effects Coordinator. He was 11 years old Surviving Evil (2009) As Special Effects. He was 9 years old
