Symbols associated with the devil or demonic entities have fascinated me since I stumbled upon an old occult book at a flea market years ago. The most iconic is probably the inverted pentagram—a five-pointed star flipped upside down, often interpreted as a rejection of divine authority or a focus on earthly desires. Baphomet, that goat-headed figure with wings, is another big one; it blends human and animal traits to symbolize duality and hidden knowledge. Then there's the Leviathan Cross, which looks like an infinity sign topped with a double cross—some say it represents eternal defiance or alchemical sulfur.
Lesser-known symbols like the Sigil of Lucifer (a stylized 'V' with a spiral) or the Black Sun (a Nazi-esque sunwheel reclaimed by some dark subcultures) carry layers of historical baggage. What's wild is how pop culture repurposes these: 'Supernatural' used the Devil's Trap pentagram to bind demons, while 'Hellboy' turned Baphomet into a tragic antihero. Personally, I think their meanings shift depending on context—a teenager doodling pentagrams might just be rebelling, whereas a 17th-century witch hunter saw pure evil.