Hat Lo was a self-proclaimed criminal lord on Coruscant during the last days of the Galactic Republic. Although he liked to think of himself as the largest crimelord on the planet, he was in reality nothing more than an errand-boy for his increasingly-irritated Hutt master, specifically Jabba Desilijic Tiure.
His longterm consort was Ayy Vida and he employed Tas Kee along with several Codru-Ji as bodyguards.
He owned the Sign of the Tri-Forked Tongue cantina in the Coruscant Underworld.
Hat Lo did business with many people, including Boba Fett.