Woop Slap[3] is the mayor of Monkey D. Luffy's hometown, Foosha Village. 

For the most part, Woop Slap is a typical village elder: practical, humorless, and disdainful of pirates (with the semi-exception of Shanks). As such, he is Foosha Village's loudest—if not only—critic against Luffy's dreams of piracy, and has remained so long after Luffy's crew attained worldwide notoriety.

At the same time, he cares deeply for his village, and is willing to go to great lengths for its people, Luffy included. Such is his dedication that, despite his irascible personality, he has managed to remain mayor for more than a decade.