There's the usual 'the darkness consumed you' screen, but has there ever been in Destiny's history a guardian joining the darkness?
Cuz I would think that a guardian would've had gone through some dark times to be fully submitted by the darkness.
Sorta how Anakin Skywalker in Star Wars joined the darkside. The emperor sold Anakin's mother to the tusken raiders where she was badly treated. Which then resulted in Anakin killing them in revenge for his mother.
And Oryx was probably doing the same with the player during the fight with him in regicide. During the fight, he says "The darkness was a gift to me, let me show you it" or something like that to persuade the player to join the darkness.
A guardian, especially if the guardian were at a young age let's say probably around Anakins age, would have gone through so much stress and trauma to become some what insane and angry.
What do you think? :)