Tano is security to Bren Cameron, the paidhi-aiji to Tabini, aiji of the Western Association. His partner is Algini. He is a Guild-trained Assassin. They are the junior pair of Bren's aishid, despite Algini's high connections in the Guild.
Tano is described as the less quiet of the two, and as atevi go, the friendlier. He and Algini have learned a version of poker and play it as recreation; Bren's comment on this is that given the way atevi understand numbers and also that neither of them is superstitious about numbers the way most atevi are, the result is a game that is elevated to a spectator sport.