Swamp Jester

The Swamp Jester can be found in the far corner of the deadly swamp in the southwestern corner of New Jester in Ultima II.

Description
Despite the well-placed warning signs regarding entering the swamp, if the Stranger dares enter the rotten mire, the hero will encounter the Swamp Jester, who merely informs the hero, "You lose, cadet!", likely a reference to the fact that the hero has likely now been permanently trapped within the poisonous muck by one of the invincible jesters that roam the town.