Zavok

"'Getting out of your chains does not make you free. Now come and face the inevitable!' - Zavok, Sonic Forces" Zavok is a demon that comes from the Lost Hex, that lives to terrorize anybody he may encounter. He relishes murder and cannot be trusted under any circumstances. Despite his seemingly heartless nature, even towards most of his team, the Deadly Six, he does show remorse and grievance for the lost lives of Zeti from days long ago. He and the rest of the Deadly Six are the only known remaining Zeti.

Master Zik
Perhaps the only living being Zavok has ever respected is the founder of the Deadly Six, Zik the Zeti. He had been Zik's student for many years, before becoming the leader of the Deadly Six. Zavok holds Zik in high regard, though will sometimes inadvertently patronize him due to his old age.

Sonic
Zavok hates Sonic with a vengeance. Zavok believes Sonic to be a waste, and loathes him for his cocky nature and upbeat attitude. It is revealed in Sonic's Hourglass that Sonic's torturer during this timeline's version of the events of Sonic Forces was none other than Phantom Zavok, the Phantom Ruby's carbon copy of Zavok.

While Sonic had remarked that he was just getting sick of the Zeti in Sonic Lost World, now just the thought of Zavok is enough to make Sonic a nervous wreck. Sonic even has a severe mental breakdown while the hourglass takes him back to the atrocities that took place aboard the Death Egg.