Aloysius O'Hare, or commonly known as Mr. O'Hare, or more simply known as O'Hare, is a character of Illumination's feature film The Lorax, an adaptation of Dr. Seuss' 1971 book of the same name.
He is the mayor of Thneedville and the Once-ler's successor of business. As a teenager, O'Hare got ideas for making lots and lots of money when he saw one of the billboard workers tearing down the Thneed Factory banner and wondered what "the next best thing" would be after the factory had to shut down for good.
He was voiced by Rob Riggle