Praetorian Prefect
In the Roman Empire, the Praetorian Prefect was the overall commander of the Praetorian Guard.
Marcus Cornelius Falco's father was killed as a supporter of the Praetorian Prefect Sejandus in the midst of Imperial power struggles while Marcus was just a boy.
In 43 AD, Lucius Geta was not yet the true Praetorian Prefect, only commanding eight cohorts of Praetorians, but he "hoped to get there" if he made a good enough impression with Emperor Claudius. (GAME: "Non-Player Characters" [+]Part of The Legions of Death, Loading...{"namedep":"Non-Player Characters","1":"The Legions of Death (game)"})
Behind the scenes
In the real world, history records that Lucius Lusius Geta did in fact become Claudius's Praetorian prefect a few years down the line.