Mark A. Sheppard, the actor who portrayed Crowley on the hit TV show Supernatural, expressed his discontent with how his character's ending was handled. Crowley, a recurring character on the long-running series, gained a significant fan following throughout his time on the show. The loyal and devoted fanbase of Supernatural ensures that any character who leaves a lasting impression on the series is likely to be remembered by fans long after their time on the show.

Initially introduced as a villain in season 5, Crowley's interests gradually aligned with the show's protagonists, Sam and Dean Winchester. Despite his demonic nature, Crowley often aided the Winchester brothers in their battles against evil. However, in the season 12 finale, Crowley met his demise while trying to seal the gates of Hell to stop Lucifer. Sacrificing his own life, he drove the Angel Blade into his stomach, ultimately ending his time on Supernatural. The show concluded its 15th season in 2020, and neither Crowley nor Sheppard made a return. Following his departure, there seemed to be some confusion among fans regarding Sheppard's relationship with the show's producers. On Twitter, executive producer Jim Michaels hinted at the possibility of Crowley's return, but Sheppard later clarified that there were no plans for him to come back. This left fans perplexed as to why such a talented supporting player was not included in future seasons. While the details surrounding Sheppard's exit remain unclear, the actor expressed his dissatisfaction with the way Crowley's storyline concluded. During a convention panel in 2018, Sheppard revealed that he felt the writers and producers had decided to move in a different direction without informing him. He believed that the show had run out of ideas for his character and criticized the manner in which Crowley's death was portrayed, feeling it diminished the intelligence of the character.

Since leaving Supernatural, Sheppard has continued to have a successful career. He appeared in DC's Doom Patrol series as the chaos magician Willoughby Kipling, as well as making appearances in other shows such as MacGyver and CW's Walker: Independence. Although his time as Crowley may have ended under less than ideal circumstances, Sheppard's talent guarantees that he will continue to thrive in the industry. It remains to be seen if he can surpass the popularity he achieved on Supernatural, but given his skills, it is undoubtedly a possibility.