Chili dogs were once a popular dish served in Mobotropolis. Sonic in particular visited a certain chili dog booth many times when he was a child. After Dr. Robotnik seized power and transformed Mobotropolis into Robotropolis, the chili dog booths were closed. However, chili dog vending machines remained, which were left forgotten in the city's sewers.
One time, Nicole mistakenly displayed a hologram of a chili dog that caught Sonic's attention. When later visiting Lower Mobius, Sonic wanted to try out the local chili dogs, only for someone to interrupt him every time he tried to eat one.
While on a mission to Robotropolis, Sonic would grab a chili dog along the way, which he ate while escaping from Swat-Bots. Later, he went to a chili dog vending machine in Robotropolis's sewers to grab another chili dog. After receiving it however, Sonic decided to save a group of Freedom Fighters who were being led to the Roboticizer.
While Sonic lived with Antoine, Sonic decided to prepare some chili dogs. However, Sonic turned out to be a messy cook, pouring out chili sauce all over Antoine's walls and on Antoine himself. Eventually, Sonic made a huge batch of chili dogs, but he had left a big mess in Antoine's kitchen. He tried offering Antoine a chili dog himself, but Antoine was too upset to eat it, so Sonic gulped it down. Later, Sonic would get another chili dog for himself before bringing one to his Uncle Chuck in his hideout in Robotropolis.
- Sonic the Hedgehog's fondness for chili dogs is something that has been a staple of Sonic's characterization in western territories, having been first established in the animated series, Adventures of Sonic the Hedgehog. In the years since, the chili dog has been established as Sonic's favorite food in just about all Sonic-related media, eventually making its way into the games' canon as well.
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