Diesel

Diesel is a black diesel shunter that was put on trial on the North Western Railway. He was sent away initially, but managed to change his ways after realizing what Boomer was doing was wrong.

Biography
Little is known about the workshop Diesel was built in, but he was transferred to another workshop soon after and separated from his brothers. He was placed next to two twin shunters named Splatter and Dodge, and the three were soon purchased by Patrick Boomer soon after. In 1957, Diesel was sent to the North Western Railway on trial. Before leaving, Patrick Boomer gave him orders to cause trouble and stir the pot in order to make his plan easier to succeed. Diesel promised to do as he was told, but wasn't able to fulfill his promise. He did manage to frame Duck and get him sent away, but got caught when he tried to frame Henry and cause James to be a runaway. Toby also overheard his entire conversation with Duck where he overheard his entire plan. Diesel was sent away in disgrace and was given a harsh talking to by Boomer.

In 1959, he returned to Sodor to guard the engines being held at Crovan's Gate works. However, Edward managed to convince him that was he was doing was wrong. Despite claiming Boomer was all he had, Diesel realized he had nothing. He left the engines at the works unattended and returned to Knapford where he rescued Annie and Clarabel. He brought them across the island to the Barrow-In-Furness police station where he informed the police where Henry was. He brought them to the workshop to find that the Fat Controller and Boomer were already dead. Diesel then assisted Henry and James with stopping Diesel 10. He was later arrested and brought to the impound where it is unknown what will happen to him.

Personality
Diesel is extremely introverted and quiet, but is arguably the smartest character in Sodor Then and Now. With an IQ of 146 to boast, Diesel was able to manipulate and frame Duck rather easily, but his ego and big mouth is what got him caught. He has his own deep thoughts on how the world should be, but often times keeps them to himself. Diesel was always rather skeptical of Boomer and Diesel 10, but was unsure of what to do and was too afraid to ditch them.

Basis
Diesel is based on a BR Class 08 Shunter. His top speed was adjusted to around 40 mph.

Livery
Diesel is painted in all black with a red buffer beam and no numbers or lettering on him whatsoever.