The Installment
cayde-6 helps briareos hecatonchires with a problem down under.
Fallen - Prologue
Not as good a hand cannoneer as cayde-6, not as good with a bow as rixx, but he could give them both a run for their money. and he did. multiple times. you know, the name of kuri's first ship was the 'foregone conclusion' for exactly this reason.
Chronicles of Arah chapter 2
"that 'robot man thing' is named cayde-6, but we just call him cayde around here, and he is what is known as an exo. he's a guardian, just like you and me. but yes, cayde has asked me to train you." at her responses, the hunter smiled.