Tuco was a sworn brother of the Black Company mentioned once in the Annals during their time in garrison in Aloe. Tuco and Reams assisted Silent in the apprehension of Tides Elba from the Temple of Occupoa. Elmo gave orders to the pair in a non-Aloen language, suggesting that Tuco and Reams had enlisted sometime before the Company arrived in the region.
Tuco is not mentioned again in the available Company Annals. But like all other brothers mentioned prior to the Battle of the Barrowland who were not among the only 10 Company survivors of that battle, Tuco must be either deceased, missing, discharged, or possibly even a deserter by the end of The White Rose.