|Species|| Demon (King of Hell)|
|Occupation|| King of Hell|
King of the Crossroads (formerly)
Lilith's second-in-command (formerly)
Tailor (formerly, as a human)
Sam and Dean (formerly/on-off)
Dick Roman (briefly)
Abaddon (unwillingly; briefly)
|Portrayed by:||Mark Sheppard|
Fergus Rodrick MacLeod (c. 1661 - 1723) was a human, who after death became Crowley; a powerful demon who was formerly King of the Crossroads and later became King of Hell. He has become an on/off ally and enemy of the Winchesters.
When he assumed the title of King of Hell, Crowley set about trying to stabilize his position by forming an alliance with Castiel in opening Purgatory to acquire the souls to make himself more powerful. He ressurected Sam Campbell to help him in this task as well as falsely promise to return Sam's soul to him. When the key to opening Purgatory was learned, Castiel double-crossed him and took the souls from right under him.
When the Leviathan were freed from Purgatory Crowley tried to form an alliance but the leader Dick Roman turned him away as he found demonkind repulsive. Crowley then went on to work with the Winchesters to see to their defeat. He aided them in stopping Dick but then abducted the prophet Kevin Tran for his own personal use.
Crowley had managed to procure the Demon Tablet and wanted to learn how to open the Gates of Hell in order to have all of his demons free in order to overrun the planet and take control. However, the Winchesters took back Kevin and the tablet and planned to use it to banish all demons from Earth forever. Crowley tried to force the hand of the Winchesters to stop but he was then captured to be used as the final trial to seal the gates forever. However, the last Knight of Hell Abaddon had returned and wished to take over dominion of Hell from him plunging it into Civil War.
Crowley manipulated Dean into helping him find Cain and the First Blade in order to use him to defeat Abaddon for him. When Dean took the Mark of Cain and destroyed Abaddon, he then set out to keep using Dean for his purposes. Dean was killed when he tried to stop Metatron and Crowley went to acquire Dean when he turned into a demon due to the power of the Mark. Crowley wanted to have Dean at his side but as a demon Dean had proven too wild and independent to control. He then worked with Sam to separate him from the blade and hid it. Crowley then had problems with a witch from the Grand Coven that turned out to be his mother Rowena. They tried to use one another before they found themselves on opposite ends. Rowena tried to have Crowley killed but he managed to evade her traps and spells.