An unnamed Mayor was the mayor of Gotham City in the months prior to the events of The Joker's takeover of Arkham Asylum.
History[]
While the Mayor was holding a City Hall meeting, The Joker and his henchmen crashed the meeting, claiming that the city had a "paucity of parking spots designated for clown cars." He "tried to park in the handicapped spot, but people told him that he wasn't sick enough." The Mayor recognized the Joker and wanted someone to call the police.
The Joker wired the Mayor up to an explosive vest that was pattered after the American Flag. An anonymous person called 911 and relayed Joker's plans seconds before the assault. Joker declared his intent to blow up the Mayor with various explosive chemicals to give a "big bodacious blast of patriotism." Batman intervened (ironically right after Joker had expressed his disappointment that Batman apparently wasn't coming), and unstrapped the Mayor.
The Mayor declared that he "had enough of this city" before he announced his resignation. Arkham Asylum Warden Quincy Sharp used the circumstances along with falsified credit for stopping Joker's plans in the Asylum riot to win in his campaign for Mayor.
Sharp's victory of becoming Mayor allowed him to implement plans with Professor Hugo Strange, which took the shape of Arkham City.