|For other uses, see Sumo|
The Sumo brand is most notable as the manufacturer of Claude's Sumo Wordman pager in GTA III, but can also be spotted in multiple locations in the aforementioned games. The company's slogan is "The Industry Heavyweight".
Sumo billboards are present in GTA III in Staunton Island and Shoreside Vale. In addition, the Sumo logo can be found on certain Yankee trucks in GTA III and use Bensons in GTA Vice City. In GTA San Andreas, Sumo is known to operate in a building at the LVA Freight Depot in Las Venturas, San Andreas, and Sumo sponsorship stickers are also present on Hotring Racers cars. Sumo cameras are advertised on the Starland Camera Centre store on Vinewood Boulevard, Market, Los Santos.
In Grand Theft Auto Online, the company's banners can be found in Benny's Original Motor Works, suggesting the company also specializes in car parts. Looted Sumo headphones can also be stored and sold by organizations.
Sumo manufactured headphones called as "Ear Bleeds" have epic sound as mentioned on boxes and its main competitor in this product type is Beat Off, another headphone manufacturing company feature in Grand Theft Auto V and Grand Theft Auto Online.
The 3D Universe rendition of Sumo is most likely based on Sony and Samsung, whereas the Sumo mobile phone is based on 1990s Nokia phones. The HD Universe rendition of Sumo is most likely inspired by Philips. The typeface itself is also based on Sony.
- Sumo Ear Bleeds headphones have a very strange connector, not like the standard TRS-Connector (aka Mini jack).
- The model name of the headphone "Ear Bleeds" is a hint at the consequences of frequent use of headphones.