Gator

Gerald, better known by his nickname "Gator", is a large tank engine who resembles an alligator.

Trivia

 * In the first trailer for Tale of the Brave, Gator's CGI model had a few differences from his final one. These include:
 * Colored rivets around his water cap.
 * White, thin lining on his front end, compared to the final having thicker gold lining.
 * Gator's real name in the Dutch narration is Gerard.
 * Gator's whistle is actually Charlie's in a deeper pitch.
 * Gator's whistle on the Tale of the Brave mini-site sounds different from his actual whistle.
 * Gator has been modified to work on Sodor, such as having buffers, a brake pipe and loose couplings. He has also been rescaled to standard gauge, whereas his original basis was narrow gauge.
 * It is currently unknown why Gator was brought to Sodor prior to his debut, why he left to work elsewhere, and why he returned in Long Lost Friend.
 * Despite the fact that his real name is "Gerald" and that "Gator" is only a nickname, his nameplates still read "Gator".
 * This makes Gator the second character to have nameplates that read a name that is not stated as his real name, with the first being Bulgy.
 * Gator is also the second character to be named after an animal, but to have a real name, the first being Duck.