About
Mark Andreas Sheppard is an English actor and musician known for his portrayal of Crowley, the demon/King of Hell on 'Supernatural'. He has also had recurring roles as Romo Lampkin on 'Battlestar Galactica,' James Sterling on 'Leverage,' and Badger on 'Firefly'. Sheppard also plays Willoughby Kipling on 'Doom Patrol'. His diverse acting career spans science fiction, fantasy, and crime dramas, showcasing his versatility and talent.
Career Timeline
Early Television Roles
Sheppard starts appearing in minor television roles, building a foundation for his acting career.
'Firefly' Recurring Role
His role as Badger on 'Firefly' gains him more visibility and some income.
'Battlestar Galactica' Role
Recurring role on 'Battlestar Galactica' increases his profile in science fiction circles.
'Leverage' Recurring Role
His role as James Sterling on 'Leverage' helps to further diversify his career.
'Supernatural' Breakthrough
Landing the role of Crowley on 'Supernatural' becomes his most iconic and impactful role, increasing fame and income.
'Doom Patrol' Series Regular
Sheppard becomes a series regular on 'Doom Patrol', continuing steady work.
Continues TV Work
Sheppard continues to secure roles in television. Maintains solid career as a character actor.
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Last updated: February 25, 2026