The Anti-possession symbol will protect the wearer from possession by a demon.
Following Sam's possession by Meg in 2.14 Born Under a Bad Sign, Bobby gives Sam and Dean each a charm amulet which the symbol. Later 3.12 Jus in Bello, the boys reveal that they have had these symbols tattooed on their chests. Other people with the anti-possession tattoo include Kevin Tran and his mother Linda Tran, Jack and Mary Winchester.
In 5.02 Good God, Y'All, Ellen reveals that Jo wears an anti-possession charm.
- Tattoos - for details on the anti-possession and other tattoos
- Fan Tattoos - the symbol is the most popular fan tattoo