Bill and Ben

Bill and Ben are tank engine twins who work for the Sodor China Clay Company, though they can commonly be found at Brendam Docks. They formerly worked at Anopha Quarry. They enjoy playing tricks and being cheeky to other engines.

Trivia

 * Sir Topham Hatt's ownership of Bill and Ben changes in the television series, as the second season episode Percy Takes the Plunge refers to them as not being Fat Controller's engines, while the third season episode One Good Turn refers to them as "the most mischievous engines working on Sir Topham Hatt's railway."
 * In the Railway Series, from Wrong Road onward, Bill and Ben have their names painted on their saddle tanks instead of having nameplates to avoid the trick they played on BoCo from happening again.
 * A behind the scenes picture of Bill's model reveals that he and Ben were to have numbers on their smokeboxes above their faces, as they did in the Railway Series.
 * Bill and Ben's television series models are currently on display at the Hara Model Railway Museum in Japan.
 * In the television series, Bill and Ben are twice the size of their basis'; Alfred and Judy. This was so their eye mechanisms and motors could be accommodated. When they returned in CGI, they were rendered in the same larger size.
 * The twins' whistle sounds are really Thomas' at higher pitches. Often, throughout the CGI Series, they swap whistle sounds.
 * Bill and Ben were known as Guillaume and Benjóin in the French version of the Classic Series.
 * Nathan Clarke did an audio sample of Bill and Ben on his DAA Management Page.
 * In an interview with SiF, Andrew Brenner stated that Bill and Ben were two of his favourite characters, along with James and Toby.
 * They might have been named after Bill & Ben the Flowerpot Men, who were first created in 1952, the same year Toby the Tram Engine was first published.
 * Bill and Ben went through several aesthetic changes in the television series:
 * Season 3:
 * Their nameplates were painted on instead of being actual plates.
 * Buffer Bother:
 * Ben gained gold buffers.
 * Season 7:
 * Ben regained black buffers.
 * Season 11:
 * Ben gained a new cheeky facemask.
 * Season 17:
 * Their faces became smaller, and were raised slightly higher up.
 * Permanent lamps and taillamps.
 * An additional sandbox was added on the footplate to mount the lamp.
 * An extra wood panel was added to the rear window to accommodate the taillamp.
 * Taller cabs.
 * Brass nameplates.
 * Red lining behind the "SCC" lettering on their boilers.
 * Red wheels.
 * External brake shoes.
 * Black domes and crossheads.
 * Brake pipes.
 * Yellow wheel lubricators on both sides, that connected to their valve gears.
 * Yellow siderod guards.
 * They speak with a Brummie accent
 * Season 19:
 * Their crossheads became grey again.
 * The text on their nameplates became gold.
 * Season 21:
 * Their crossheads became black again.