Supernatural: 10 Best Characters Who Only Appeared In One Episode
3. Ishim - Season 12, Episode 10
Like many angels in the Supernatural universe, Ishim is a monster, virtually undistinguishable in his actions from the demons he’s supposed to be so diametrically opposed to. He has an insane backstory for a character that only appeared in a single episode.
Supernatural traces Ishim's story back to the late 19th century when a professor of Apocalyptic Literature called Lilly Sunder learns a spell to summon an angel. Her spell summons Ishim and the immortal becomes obsessed with her, believing himself in love.
Lilly soon learns just what a monster Ishim is and runs away as fast as she can. To protect herself and her daughter, she marries another angel, Akobel. So Ishim does what any deranged psychopath would do. He murders Lilly’s daughter and husband to punish her for leaving him. One of the angels in Ishim’s kill squad is our good old friend Castiel.
Ishim serves as a reminder of Castiel’s past as a ruthless killer rather than the noble angel the fans have come to love. It is an interesting path to explore but Ishim dies before we can go down it any farther.