Eris is a sportswear company that appears in GTA 6.
The brand first appeared in GTA 4, returning in Chinatown Wars, GTA 5, and GTA Online. Although NPCs have often been shown wearing Eris clothing, the brand has only been purchasable in GTA Online and GTA 6 so far.
In Trailer 1, a dirt biker can be seen wearing a pair of black and white Eris sneakers, revealing the company's return.
Eris features more heavily in the images of GTA 6 that were released alongside Trailer 2. A pair of Eris sneakers can be seen being worn by 
What's more, 
Eris is a clear parody of the real brand Nike. Not only does Eris's clothing closely resemble real Nike products, but both names come from Greek mythology.
In ancient Greek mythology, Eris is the name of the goddess of strife, discord, and chaos, whereas Nike is the name of the goddess of Victory.
The Eris logo has undergone a major redesign in GTA 6, now appearing far more similar to modern Nike branding.
