Part 11: Mysterious Ones
Dual commentary is available in the downloaded video.
Part 11: Mysterious Ones (download source)
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Director commentary: Part 1 | Part 2 | Part 3
Transcribed from in-game text
Gracious & Glorious
Within the nine ranks of the angelic hierarchy, the highest ranking Seraphim are charged with governing the love and zeal for the Creator. The pure white armoured Gracious and the black armour-clad Glorious are often sighted in pairs; however, their existence itself remains legend, subject to rumours of varied veracity.
Supposedly gifted with incredible god-like powers, there are no records of Gracious or Glorious appearing on the battlefield of evil; however, it is said that this is because a mere taste of their power is enough to destroy the world, devastating all [in] its path - both the record and the record-keeper.