The Fat Controller
The Fat Controller, whose real name is Sir Topham Hatt, is a fictional character in The Railway Series books that were written by the Reverend Wilbert Awdry and his son Christopher. His full name is revealed in the foreword to the 1951 book Henry the Green Engine. He also appears in the television series Thomas and Friends, adapted from the books, and also its reboot, Thomas & Friends: All Engines Go!.