For Guild Bounties, Ander “Wildman” Westward can spawn inside the worm nest area that is part of the “Help Advisor Zakk” event. During the event, the worms in that area are invulnerable, so it makes it nearly impossible to get to the Veteran Karka that swallowed the NPC, kill it, trigger the event, and kill the NPC.
I’ve posted this under “Game Bugs,” because this seems unintentionally difficult.
John Smith: “you should kill monsters, because killing monsters is awesome.”