Percival Gibbons is a high-ranking MI6 official commanding British intelligence operations in Italy. He holds direct authority over field agent Nyx, directing her missions focused on acquiring valuable artifacts and achieving critical intelligence objectives, including the pursuit of the artifact "Dragon's Tale." Gibbons occupies a central role in MI6's targeting of significant assets.

He employs coercive methods to ensure operational success, exploiting personal vulnerabilities to control subordinates. Gibbons specifically leverages threats against Nyx's family to compel her compliance with hazardous assignments, establishing him as an antagonist who prioritizes agency goals above ethical constraints.

His command extends to projects involving advanced technology, notably the "Italian Dream" initiative researching personality implantation via dreams. Despite his authority, Gibbons proves expendable within larger power struggles involving historical figures. Leonardo da Vinci eliminates him during the culmination of their conflicting agendas.

The character's narrative concludes with his off-screen death at da Vinci's hands, resolving his role as an antagonist and advancing the broader conflict surrounding da Vinci's resurgence.