Vecna is a fictional dark wizard-turned-lich and godlike villain from the Dungeons & Dragons role‑playing game, and the name is also used for the main antagonist in season 4 of the TV series Stranger Things. In both cases, “Vecna” represents a powerful, supernatural evil tied to magic, secrets, and telepathic or psychic influence.

Vecna in Dungeons & Dragons

• In Dungeons & Dragons lore, Vecna begins as a mortal wizard who pursues forbidden necromancy, becomes an undead lich, and later ascends toward godhood.
• He is famous for surviving as disembodied artifacts called the Hand of Vecna and the Eye of Vecna, which grant great power at a terrible cost to whoever uses them.

Vecna in Stranger Things

• In Stranger Things, Vecna is the nickname the kids give to Henry Creel, also known as One, a powerful psychic villain from the Upside Down.
• He is portrayed as the mastermind behind many of the show’s supernatural events, using visions and mental torment to hunt and kill victims connected to past trauma.