The Rodian Tsuulo's kin consisted of his father, mother, and brother, Reezo. The family resided on the Core Worlds planet Coruscant until his parents met their death while on a business excursion to the Core Worlds planet Corellia. Subsequently, Tsuulo took on the role of a scrumrat within the White Worms crime syndicate on Corellia, and Reezo pursued a career as a racer.