Supernatural
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Castiel could be on a direct path to godhood if Supernatural season 16 ever comes to pass. Portrayed by Misha Collins since season 4, Castiel did not receive an especially satisfying ending in Supernatural's series finale - largely because Castiel was not actually in Supernatural's season finale. The beige-clad angel sacrificed himself to save Dean Winchester, dramatically declared his love, then found himself taken away by the Empty. A single line in Supernatural's finale confirms that Castiel ultimately survived, but the character himself remained frustratingly absent.