Sometimes when a spellcaster wants to build a better monster, the result is not always what he expected. The primal ghoul was developed originally as a more powerful version of a ghoul. And while this goal was achieved, the creature was still supposed to be submissive to its creator. Unfortunately, the primal ghoul's nature forbids it to serve others. Instead the monster leads other ghouls and ghasts in their eternal quest to consume flesh. Adventurers should not be fooled by the name "primal." This name was given due to the creature's appearance, not its intelligence.