As an ángel of God, Castiel is an extremely powerful being. Merely perceiving his actual form typically results in blindness, as the appearance of his natural "visage" is so overwhelming that it is capable of burning a individual's eyes from their sockets, including those possessed por a demon. However, according to Castiel himself, certain "special people" are able to tolerate his true appearance and voice. He initially believed Dean to be one of these special individuals, yet his ignorance led only to two failed attempts to contact Dean. Apparently, one can protect themselves from such personal...
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