Over 15 seasons of Supernatural, a wide range of demons appeared onscreen — from generic monsters to complex, charismatic characters without whom the series might never have become a cult classic. Some vanished without leaving so much as a name, while others turned every appearance into an event. Here are the most memorable, intriguing, and fan-favourite demons of the show.
Crowley – King of Hell and Charisma
A classic antihero who went from being hated to adored. Mark Sheppard played the crossroads demon with a refined British accent, instantly turning him into a fan favourite.Crowley always played by his own rules. He occasionally helped the Winchesters, but never let anyone forget he was still a demon. His dry wit, sarcasm, and elegant style made him one of the most iconic figures in the show’s mythology.
Azazel – The Yellow-Eyed Demon
The first truly menacing antagonist of the early seasons. Azazel killed Sam’s mother and forced the brothers onto their path as hunters. A manipulator and puppet master, he was building an army of gifted children, spreading chaos, and preparing for Lucifer’s return. His presence always meant trouble. Though his screen time was relatively short, his image became legendary.
Lilith – The Embodiment of Ancient Evil
The first female demon in Hell and one of the show’s most powerful figures. Lilith was obsessed with breaking the seals that kept Lucifer imprisoned, and her path was littered with bodies. What made her especially disturbing was her tendency to appear in the bodies of young girls, adding an extra layer of fear. Lilith was a demon that evoked a primal sense of dread.
Meg – Duplicitous and Dangerous
One of the Winchesters’ oldest demonic acquaintances. Meg switched bodies and allegiances, but remained one of the most interesting demons throughout the series. First an enemy, then a questionable ally, and finally a collaborator with Castiel in later seasons. Her cynical quips and love of chaos brought edge to every scene.
Abaddon – A Knight of Hell
Unlike other demons, Abaddon was direct and ruthless. Ambitious and bloodthirsty, she sought to restore Hell’s former glory. Dean had some of his fiercest clashes with her.It took the first blade — a special weapon capable of killing Knights of Hell — to defeat her. A powerful female antagonist.
Alastair – The Inquisitor Demon
He didn’t appear often, but he left a lasting impression. A demon who tortured souls in Hell, including the Winchesters themselves. Terrifying, cold-blooded, eerily calm. He marked a turning point in Dean’s arc, breaking him in Hell. One of the darkest characters in the Supernatural universe.
Lucifer – The Fallen Archangel
Technically not a demon — but from the moment he was released, he became the central dark force in the series. His charm, biting humour, and overwhelming power made him one of the show’s most beloved antagonists. Portrayed by Mark Pellegrino, Lucifer became almost a theatrical figure, mixing delusions of grandeur with deep, genuine pain.
In Supernatural, demons weren’t just monsters. They were vessels through which the show explored temptation, free will, inner strength, guilt, and redemption. Some fell. Some changed. Some died with a surprising kind of courage. And that’s why they stayed in viewers’ memories.
