For the regular universe counterpart, see Joss Hayes.

In the Mirror Universe, Hayes was a member of the MACO detatchment aboard the ISS Enterprise (NX-01), with the rank of Sergeant. He was a member of Captain Travis Mayweather's personal security contingent. (ENT novel: Age of the Empress)

Hayes is presumably the mirror universe counterpart to MACO Major Joss Hayes, though the character's full name was not given.