Pompous merchants are rude merchants wandering around outside of The Pick and Lute pub in Taverley. They can be pickpocketed for coins, giving 8 Thieving experience per successful pickpocket. Players are directed to pickpocket them by Ruth Savage during the Troll Warzone tutorial. A failed attempt to pickpocket them results in the player stunned for a few seconds and a loss of life points based on the player's total life points.
There is currently a glitch that causes the pompous merchants to sometimes noclip through some rocks which are impassable for players. However, they never seem to wander off the map or stay in inaccessible areas, so this isn't a problem.
Failing to successfully pickpocket the merchants makes them shout "You oaf, begone!"