Commissioner Rowan heads Scotland Yard, depicted as a cat consistent with the series' anthropomorphic design. He manages investigations into major crimes, notably the high-profile theft of £55,000 from the Bank of England. Upon receiving intelligence implicating Willy Fog in the robbery, Rowan dispatches Inspector Dix and Constable Bully to pursue Fog worldwide, issuing a stern warning that failure to capture Fog or mishandling the mission will result in their dismissal from the force. This order initiates the central conflict motivating Dix and Bully's relentless pursuit.

Rowan maintains a strictly professional dynamic with subordinates, demanding adherence to protocol and tangible results. His role is administrative and authoritative; he operates from Scotland Yard's London headquarters, directing the chase remotely without engaging in field operations. His narrative involvement occurs primarily through his initial commands to Dix and Bully.

Rowan exhibits no significant character evolution or elaborated backstory across the series or related media. He functions exclusively as an institutional authority figure within law enforcement, focused on apprehending suspects through official procedures. His decisions directly trigger the police pursuit subplot against Fog, though he appears solely in his capacity as overseeing commissioner.