The restaurant is based on the real-life fast food franchise Subway, with the company's logo closely resembling the 1990s Subway logo.
SubStandard has two restaurants; both in Los Santos. One is located on the ground floor of the Fatt Building on Vinewood Boulevard in Market, while the other and another in Santa Maria Beach. Both restaurants are inaccessible to CJ and play no role in the storyline whatsoever. The name "SubStandard" implies that the quality of the business and the food is poor.
- TUBE - Another Subway parody, featured in Grand Theft Auto: Liberty City Stories.
- Bite! - Another Subway parody, featured in the HD Universe.