Zachariah is a character appearing on the CW television series, Supernatural. First appearing in the show's fourth season, he goes on to serve as the tertiary antagonist in the fifth season. A seraph (a higher-level angel in the show's universe), Zachariah is Castiel's superior as well as Michael's second-in-command. He is portrayed by Kurt Fuller, who also played Jack Hardemeyer in Ghostbusters II.