Dark Keeper Vorfalk can be found in Blackrock Depths . He is one of six possible Keepers which spawn after a party member looks at the portrait in the Black Vault anteroom. He drops the Dark Keeper Key which is needed to open the Dark Coffer in the Black Vault. Vorfalk can be found inside the neutral Bar, the Grim Guzzler. Attacking him will aggro the patrons of the bar.