The Fat Controller

First off
http://ttte.wikia.com/wiki/Sir_Topham_Hatt <- that is the real Fat Controller and as a side note, depending on the time frame, the Fat Controller change's, In old times its Sir Topham Hatt I mid range it's Sir Topham Hatt II and in modorn day's it's Sir Topham Hatt III, and It's soon to change by Fire-Cooking insider info, so pleas refer to the times the Railway Series Fat Controller is in charge!

Sir Topham Hatt I
Kind young gentleman he rose to railway power, Edward as his right-hand man in the early days he built up a strong relationship with his engines, keeping his engine crew to a small amount of hard working engines with strong work ethics. As he learned about his engines he kept journals and records about them, even getting to a point where he legally made them second class citizens, due to a government loophole. The journals and records he kept where the key to his railway, the only thing he ever left as highly important, non disposable info.

Sir Topham Hatt II
Taking over for his father he quickly built up the railway stronger than before. Having grown up on the railway he had as much insight as his father, only referencing the box his father left with all his insight one and a while. Slowly he started widening the engine crew, slowly building up a large fleet. Acting like a father to his engines he's a little more strict than his Father.

Sir Topham Hatt III
Being the third generation he's starting to recruit newer engines, including electric and diesel, tho he still sticks to steam as his majority. Bringing in more engines to keep up with the work load, even building new engines with specific purpose. Tho not knowing of the journals until recently he has added a lot to them, even proving and passing laws to make his engines have more rights. He often lets his engines have open and public relations, unlike in the past when it was frowned upon for engines to date (the first Fat Controller did accept his engines dating but never openly told them this and when he found out about there hookups would ask to keep it on the down low). He often lets his engines do human thing's (dating, enrapturing, buy thing's, etc...) because he see's them as living being's not just machines.

Future of the role of the Fat Controller
It is not known which of the current Fat Controllers children and if any of them will take over, tho his two boy's are not involved in the railroad his daughter is, creating difficulties with the Fat Controllers plans of his oldest son taking over.