User blog comment:Sethril/Destiny: Lore...of sorts..../@comment-208.25.211.33-20141130225141

Shaxx disobeyed Saladin during the battle at Twighlight Gap by starting the counter attack after Saladin had given the order to hold their ground.

Osiris was the leader of a faction at the tower before he was exiled for having radical and dangerous views.

All that it is known about the Exos is that they were created by humans during the Golden Age and their purpose was lost during th collapse.