Mike Mulligan is a character from the children's book "Mike Mulligan and His Steam Shovel," written by Virginia Lee Burton. The story follows Mike, a hardworking man who operates a steam shovel named Mary Anne. Together, they have completed many tough jobs in the past. As technology advances, Mike and Mary Anne face competition from modern machines. Determined to prove their worth, they take on a challenging task to dig a cellar for a new town hall. Despite the odds, they showcase their skills and teamwork, ultimately finding a new purpose in the community.