He added: “That’s cool for me, you know, that there’s a footnote about Supernatural when people are talking about Scooby-Doo.
The pair teamed up with the Supernatural cast and crew alongside animation director Spike Brandt and Warner Bros. Animation to make this crossover a reality.
While there is a reference to the character in the episode, Gabriel is “not the cause of this specific adventure.”
Co-showrunner Andrew Dabb confirmed with EW that the episode was actually written a year before they decided to bring Gabriel back.