Johanhus Ulsbrecht is the leader of the Humans Against Monsters (H.A.M.) cult. He can be found inside the H.A.M. Dungeon in the southern room behind a desk. He is a major character (players do not need to speak to him directly) in the Dorgeshuun quest series. When the H.A.M. cult are ordered by the laws of Duke Horacio to stop interfering directly with the affairs of humans and monsters, some more extreme members of the movement split into a more militant faction led by Sigmund.
Johanhus remains the leader of the passive faction, petitioning Duke Horacio of Lumbridge to turn against the Dorgeshuun but no longer taking any direct action for fear of punishment. He also seems less encouraged of the idea to wipe out all of the goblins.
After The Chosen Commander, he is saddened by Sigmun's death and his movement defeated, though he claims that Sigmun's actions showed the dangers of direct involvement, and that his actions caused some "good people" to lose their lives. As a result, he continues to lobby peacefully against the Dorgeshuun government.
He plays a small role in One Small Favour, where the adventurer is tasked by Aggie the witch to find her apprentice Jimmy the Chisel, who the cult had kidnapped in return for defending Brian's friend in an upcoming trial. Johanhus agrees to let Jimmy leave if the adventurer provides the cult with a month's supply of chickens, suggesting to visit Fred the Farmer. The adventurer completes more tasks, managing to secure a month's worth of chickens from Seth Groats. Johanus allows Jimmy to leave the H.A.M. hideout, though he unsuccessfully tries to recruit the adventurer into the cult's cause.