The chili dog is an object that appears in the Sonic Underground television series. It is a popular food product consumed on Mobius, which is made and sold by several parties. It is perhaps best known as the favorite food of Sonic the Hedgehog.
As the name suggests, the chili dog is a generic name for a hot dog served in a bun and topped with some sort of meat sauce and a spicy substance known as chili. Other types of chili dogs also exist. For example, Sonia likes to eat chili dogs with tofu, much to her brother Sonic's disgust.
- 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 every Sonic-related media, eventually making its way into the games' canon as well.
- Noticeably, Sonic is mostly seen tossing chili dogs into his mouth and swallowing them whole, (though there was one instance where he ate most of a chili dog in one bite before eating the last bite a few seconds later).