|Relatives||Mother and Father|
|Marital Status||Assumed Single|
|First Mention||Fiery Pit|
Herbert is the Dungeon Master who is worshipped by Forgath. It is revealed that he lives in his parent's basement, is a part-time Starbucks employee , plays World of Warcraft, is unsuccessful with dating women  and owns an X-Box 360 .
When Herbert answers a question, he uses Not-Walter, a pit fiend. Not-Walter appears out of a circular gate in the ground. Written around the gate is usually a comment from Herbert. Not-Walter answers the questions of the HAP then leaves.
Not-Walter is the main character in "Not-Walter Screams Like a Little Girl" short story written by Tarol Hunt. The story is about Not-Walter who is summoned by Greena the Demon Slayer.