Sir Topham Hatt is one of the main characters in the Five Nights at Thomas's series.
Five Nights at Thomas's Edit
In the Night 1 phone call, Sir Topham Hatt welcomes Chuck on his job as a security guard at Thomas's Pizza Railway and introduces himself his conductor, as Sir Topham Hatt, tries to tell chuck some "useful information", his mother starts calling him for dinner and Sir Topham Hatt tells her to shut up, Dowager scolds Topham and then he apologies. He gets more obese and greedy as the series progresses.
Five Nights at Thomas's 2 Edit
Sir Topham Hatt starts another Thomas restaurant with "a lot of money", updating with three doors but only so that two extra trains can 'kill' Chuck, so there's one less paycheck for the week. But during the final phone call, Sir Topham Hatt gets caught by James and gets raped with his funnel, injecting a yellow fluid into his ass which transforms Topham into the Marionette Monster, leader of the ghost trains.
Five Nights at Thomas's 3 Edit
There is an Easter Egg were Sir Topham Hatt appears randomly to some lucky players. He appears to look a bit like the marionette from Five Nights at Freddy's 2.
Five Nights at Thomas's 4 Edit
Sir Topham Hatt tries to get revenge on Chuck for surviving his three previous restaurants. Unfortunately, the game was cancelled.