At fifteen, Marcus Annius Verus displays notable intelligence and a thoughtful demeanor. Emperor Hadrian designates him as a future imperial candidate but postpones formal succession due to his youth, temporarily appointing Lucius Aurelius Caesar (Ceionius Commodus) as heir. This arrangement addresses Hadrian's concern over political instability if Ceionius dies prematurely. Despite his age, Marcus holds the post of chief administrator within the imperial structure, having earned it through demonstrated competence. He shares Hadrian's confidence in the architect Lucius Modestus and endorses his bathhouse innovations. Marcus Annius Verus later becomes the emperor known as Marcus Aurelius.