| Question | Emperor | Dates of Reign |
| Which Emperor was installed as Emperor of the West at the age of six in AD 425? | |
| Which Emperor had a damnatio memoriae against him after his 3 month rule in AD 253 was brought to an end by his death at the hands of his men? | |
| Which Emperor was the only one of the sons of Constantine the Great to rule the whole Empire? | |
| Which Emperor issued an Edict of Toleration for Christians in AD 311 despite being a major figure in the prosecution of Christians? | |
| Which Emperor officially abandoned Germania Superior? | |
| Which Emperor was declared an enemy of the state by the Senate and then cut his throat to avoid execution? | |
| Which Emperor was the first in the Year of the Five Emperors? | |
| Which Emperor was executed by his Co-Emperor when the latter lost a battle and needed a peace treaty with his rival in AD 317? | |
| Which Emperor was forced to adopt an heir by a revolt of the Praetorian Guard? | |
| Which Emperor opened the doors of the Temple of Janus for the last time in Roman history? | |
| Which Emperor died at the Battle of the Milvian Bridge on 28 October AD 312? | |
| Which Emperor was imprisoned at Tres Tabernae in AD 307? | |
| Which Emperor was Co-Emperor with his adopted brother until his death from food poisoning or smallpox? | |
| Which Emperor was the last Western Roman Emperor? | |
| Which Emperor beat the Goths at the Battle of Naissus in AD 268/9? | |
| Which Emperor was (according to one source) killed by lightning? | |
| Which Emperor died in the Plague of Cyprian in AD 251? | |
| Which Emperor was the last to lead a fully united Empire? (After his death it spilt for ever into Eastern and Western halves) | |
| Which Emperor was described as a religious man, under the control of his magister militum, Ricimer, who died of natural causes in AD 465? | |
| Which Emperor according to Gibbon: 'presents the welcome discovery of a great and heroic character, such as sometimes arise, in a degenerate age'? | |
| Which Emperor was in competition with Constantine I and was finally defeated at the AD 324 Battle of Adrianople? | |
| Which Emperor got the title 'Restorer of the World' in response to his supposed ending of the Crisis of the Third Century and recapturing the Gallic and Palmyrene Empires? | |
| Which Emperor fought off two challengers to claim full control of the Empire from AD 193 – AD 197? | |
| Which Emperor was never acknowledged as Emperor by the entire Roman world? (Only the Senate, the armies of Germania Inferior and Superior, Gaul, Britannia and Raetia agreed) | |
| Which Emperor was killed by their own men in August 253? | |
| Which Emperor received the title of princeps iuventutis (prince of youth) from his father before he was made Co-Emperor in AD 251? | |
| Which Emperor was defeated by forces loyal to the Emperor before committing suicide with his belt? | |
| Which Emperor was the first to convert to Christianity and moved the capital of the Empire to Byzantium which he then renamed after himself? | |
| Which Emperor was appointed Caesar by his father. In 247 he became consul, and later elevated by his father to the rank of Augustus and co-ruler? | |
| Which Emperor was murdered in a palace conspiracy organized by court officials on the 18th September? | |