Unidentified Scion

Unidentified Scion was a male Human member of the Scions of Zakuul. While serving with Exarch Malforia, he had a vision about her climbing a sky-ladder with a metal assassin before facing her greatest test. Right after he said it, he was killed by Malforia under order by Emperor Arcann. Years later, his prophecy would come true on Obus VI, where the Malforia's test turned out to be the vacuum of space, which she did not survive.

Behind the scenes
Unidentified Scion is mentioned in Star Wars: The Old Republic: Knights of the Fallen Empire Interlude: Shroud of Memory.