Didius Julianus
Caligula, Titus, Hadrian, Lucius Verus, Caracalla, Geta and Didius Julianus were all said to have performed in the arena, either in public or private, but risks to themselves were minimal. Claudius, characterised by his historians as morbidly cruel and boorish, fought a whale trapped in the harbor in front of a group of spectators. Commentators invariably disapproved of such performances.