Reconstruction of the face of Caligula
Caligula (12-41 AD), for many reasons, he is considered one of the worst emperors in Roman history.
The list of follies attributed to it, some invented or exaggerated, but most of it real and documented, is practically infinite ( see https://www.pilloledistoria.it/8853/storia-antica/dal-cibo-al-cavallo-alcune-follie-).
Among the many, it is said that once, during a banquet, he suddenly and loudly burst out laughing for no apparent reason, when one of the guests present asked him the reason for such strange hilarity.
The response of the first citizen of Rome was that he was thinking about his death, that of the diner.
Shortly after, the Emperor had the man killed, practically on a whim.