Mr. O'Hare was the founder of O'Hare Purified Air. He is a serious businessman who doesn't take no for an answer. He is friendly and a people person on the outside but if you get on his wrong side he can ruin your life. A greedy and manipulative businessman who pollutes the air and prevents the re-introduction of trees to further his monopoly and profits from selling air to the citizens of Thneedville. Everyone in Thneedville loves him. He is around 4 feet tall and very insecure about it.