TT4 was a protocol droid that was used by the company Tor-Ro-Bo Industries as an irregular transport specialist. At some point, TT4 contacted a group of spacers on the behalf of Tor-Ro-Bo and hired them to smuggle some semi-processed TOL-type ore from the planet 244Core to the bulk freighter Tor 7863, in breach of a profit-sharing agreement that Tor-Ro-Bo had signed with the other corporations that operated on 244Core.