Bob the Builder is the main protagonist and a general contractor and head of his own construction yard based in Bobsville, and later in Sunflower Valley and Fixham Harbour.
Bob is from a builder family, his father Robert is also a builder and so was his grandfather Billy. He is assisted by Wendy and a host of antrophomorphic vehicles in various projects in and around town. In the early episodes he was not good with computers but in newer episodes he used them for construction work designing. Some of the problems in the show arise from Bob's habit of forgetting to turn his mobile phone on. He also is the owner of Pilchard the Cat.