|Species|| Crossroad Demon (partially-cured)|
|Title/Alias|| Fergus Rodric MacLeod (as a human)|
The Salesman (by Abaddon)
Lucky the Leprechaun (by Demons behind his back)
|Occupation|| King of Hell|
King of the Crossroads (originally)
Lilith's second-in-command (formerly)
Tailor (formerly, as a human)
Lucifer's Army (formerly)
|Family|| Unnamed mother †|
Gavin MacLeod (son)
|Portrayed by:|| Mark Sheppard|
Lauren Tom (briefly)
Marco Soriano (briefly)
Although he initially served Lilith, he went rogue in Season 5 after her death and Lucifer's release, aiding the Winchester brothers in resealing the latter back into his cage. With the power vacuum in Hell unoccupied, and to protect himself from the wrath of his fellow demons, he appointed himself the new King of Hell.
Crowley allied with Sam and Dean in Season 5 against Lucifer, then with Castiel and briefly Raphael in Season 6, and then with the Winchesters again in Season 7 against the Leviathans. However, as of Season 8, he cuts his allegiance to the Winchesters and Castiel, seeking vengeance as well as attempting to capture the Prophet Kevin Tran and The Word of God to further his own goals, only to do captured by the Winchesters as part of their plan to close Hell.
In Season 9 Crowley is Sam and Dean's captive who is currently interrogated by the two for the names of every demon on Earth while Crowley is also being hunted by Abaddon as part of her plan to takeover Hell. However as part of a deal to save Sam from possession of the fallen angel Gadreel, Crowley has been freed and is now working with Dean to find the First Blade to kill Abaddon with.
Crowley is the longest surviving and most recurring antagonist in the series.