Ultimately he breaks allegiance with Heaven to side with humanity. When he learns that Michael actually intends for Lucifer to be released so he can kill him, Castiel tries to warn Dean, but is punished. Over time he developed an empathy for the Winchesters, in particular Dean. Castiel was amongst a group of angels who manifested on Earth to stop the breaking of the the 66 Seals which will release Lucifer and start the Apocalypse. According to him, he did so 'Because God commanded it', in doing so, his hand print was burned into Dean's left shoulder. Many angels laid siege to Hell to rescue Dean Winchester, but it was Castiel who ultimately pulled Dean out. 3.138 15.08 Our Father, Who Aren't in Heaven.3.98 12.15 Somewhere Between Heaven and Hell.3.97 12.12 Stuck in the Middle (With You).3.96 12.10 Lily Sunder Has Some Regrets.3.80 11.01 Out of the Darkness, Into the Fire.3.56 9.01 I Think I'm Gonna Like It Here.3.17 5.06 I Believe the Children Are Our Future.3.9 4.18 The Monster at the End of This Book.3.5 4.09 I Know What You Did Last Summer.3.4 4.07 It's the Great Pumpkin, Sam Winchester.3.2 4.02 Are You There, God? It's Me, Dean Winchester.
