"There’s no underestimating how important angels have been to Supernatural. They reinvigorated a show that had become a little too comfortable with its monster-of-the-week format, their introduction in the very first episode of season four marking the exact turning point the show changed from a “worthwhile” watch to a “must” watch. Most were villains: Raphael, Uriel, Zachariah; some were fallen angels: Anna Milton, Lucifer; while others, such as trenchcoat deity Castiel and Balthazar eventually came round to helping the brothers. Castiel, of course, was the break out celestial servant, initially envisioned as more of a guest star, he became a regular in the fifth season and one of the most popular characters in the show’s history."

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Top 10 TV Angels via SFX (via cylon-angel)