(Agenda) Ghostknight, Vengeful Soul

Lore
He is not an arbiter of evil, but one who afflicts the perpetrators of misdeeds with the suffering they incurred upon the blameless. Mere death will not quench his rage; he will gouge out their eyes, slice open their bellies, and sever their limbs. Only when he hears their anguished moans and pleas for mercy will he end their lives, having attained the revenge he sought.

Acquisition
?

Name origin
?