Anton Szandor LaVey was the founder of the Church of Satan and author of The Satanic Bible. He was known for his work in establishing LaVeyan Satanism, a religion and philosophy that promotes individualism and self-indulgence.
This is based on winning 2 head-to-head matchups with other famous people, but also losing 14 head-to-head matchups.
Most recently Anton LaVey lost a matchup to Zara Tindall (#1902) voted by someone from Canada.