Raul participated in the Great Railway Show's Shunting Challenge at least twice and won the championship at least once.
Once when he was being carried from Brazil to compete in England via a rail ferry, he accidentally arrived on the Island of Sodor when it made a wrong stop. Raul promptly backed onto the ferry, but not before Thomas caught up to him and attempted to start a conversation with him until being bumped out of the way by Vinnie.
After the Great Railway Show ended, Raul left the Mainland and returned to Brazil, though Thomas' victory left him with a desire to beat him at something else.
He would later meet Thomas again, during his adventures in Brazil. Unfortunately, things got out of his buffers during a game, and he later scored a goal, despite that not being the point of the game. He later had a contest with Thomas, though subsequent rematches put the visiting engine on a strain, and he was thoroughly unimpressed when he cheated during a later race. When his coupling snapped during a contest of strength, he was rescued from falling into the sea by Thomas giving up the contest. He later made up with him... but not before a beach ball bounced off his boiler into the sea.
Raul is a feisty little tank engine from sunny Brazil who is an eager competitor. Playful as he is, his competitive nature often proves to be an annoyance in simple things such as playing a game, as he's a bit of a sore loser and doesn't like it when things don't go his way. Additionally, he has a bit of an ego when they do go his way. He also makes everything into a contest if he can, using unfair advantages to win if desperate. After being saved by Thomas during a contest, he later admits that he was hoping to beat him at something after losing the Great Railway Show, but was more satisfied with being friends rather than rivals.
Raul is based on a series of three vertical-boilered steam locomotives built by Sentinel in 1931 for the São Paulo Railway. The real engine carrying his number was in service at the Amsted Maxion railway equipment factory in Cruzeiro, Brazil from 1959 until October 2014. In 2015, it and classmate 167 were preserved by the ABPF; the third engine, 168, had been scrapped decades before. Their withdrawal marked the end of the commercial use of steam locomotives in Brazil. 166 is currently dismantled and undergoing restoration.
His basis is built to run on broad gauge rails, whereas Raul is standard gauge. The Brazilian Tank Engine is another member of this class.
Raul is painted yellow, blue and green with blue lining. He has yellow and black hazard stripes painted across his running board and bufferbeams, and the number "166" on the sides of his cab in white, surrounded by a blue diamond. His wheels are grey with white rims.
- 2016 - 6-Movie Coloring Collection (not named; does not speak), Off to the Races! (not named; does not speak), The Great Railway Show (cameo), The Great Race (not named; does not speak), The Great Race: Sticker Activity Book and The Great Race: The Movie Storybook (not named; does not speak)
- 2017 - Thomas and the Trains of the World
- 2018 - Character Encyclopedia
- 2019 - Engines Around the World
- 2016 - Magical Tracks
- Rob Rackstraw (UK/US; The Great Race only)
- Federico Trujillo (UK/US; twenty-third series onwards)
- Hiroaki Tajiri (Japan)
- Salvador Reyes (Latin America)
- Joachim Kretzer (Germany)
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- Raul is painted in the colours of the Brazilian flag.
- Raul's promotional video incorrectly states that he is based off of the Two-Engined Sentinel 7109. This engine was originally the inspiration for Logan's number.
- Raul had been partially modified to work on British rail: he has been given buffers and chain couplings. He has also been given a lamp.
- Even though his wheels are grey, his merchandise depicts him with green or yellow wheels.
- His name is the Latin translation for "Ralph".
- “Back up, back up!”
- ―Raul ordering the engines back on to the ship, The Great Race
- ―Raul shouting to the signalman, The Great Race
- “Oh well. You win some, you lose some.”
- ―Raul, Grudge Match