This bizarre entity appears as a hunched human male with large eyes. He carries a trined staff with a floating severed hand as the centerpiece. The Keeper claims to be born of the realm of Deadhold, the demi-plane splintered long ago from the Shadowfell. He keeps a tally of the personal history of every dead creature that dwells there.
After meeting with the party, it has become clear that The Keeper wishes to wrest Deadhold from Orcus’s power and claim it for himself. He makes a bargain with the group to further that aim.
The group kept their bargain by wresting Nightbringer from Zirithian.