Pupienus

Marcus Clodius Pupienus Maximus (c. 164–238) was Roman emperor with Balbinus for 99 days in 238, during the Year of the Six Emperors. The sources for this period are scant, and thus knowledge of the emperor is limited. In most contemporary texts he is referred to by his cognomen "Maximus" rather than by his second nomen (family name) Pupienus (Classical Latin: [pupiˈenʊs]).

Source: Wikipedia — https://en.wikipedia.org/wiki/Pupienus