
Licario, called Ikarios by the Greek chroniclers, was a Byzantine admiral of Italian origin in the 13th century. At odds with the Latin barons of his native Euboea, he entered the service of the Byzantine emperor Michael VIII Palaiologos, and reconquered many of the Aegean islands for him in the 1270s. For his exploits, he was rewarded with Euboea as a fief and rose to the rank of megas konostaulos and megas doux, the first foreigner to do so.

Constantine V was Byzantine emperor from 741 to 775. His reign saw a consolidation of Byzantine security from external threats. As an able military leader, Constantine took advantage of civil war in the Muslim world to make limited offensives on the Arab frontier. With this eastern frontier secure, he undertook repeated campaigns against the Bulgars in the Balkans. His military activity, and policy of settling Christian populations from the Arab frontier in Thrace, made Byzantium's hold on its Balkan territories more secure. Religious strife and controversy was a prominent feature of his reign. His fervent support of Iconoclasm and opposition to monasticism led to his vilification by later Byzantine historians and writers, who denigrated him as Kopronymos or Copronymus (Κοπρώνυμος), meaning the dung-named.

Justinian II, surnamed Rhinotmetos or Rhinotmetus, was the last Byzantine Emperor of the Heraclian dynasty, reigning from 685 to 695 and again from 705 to 711. Justinian II was an ambitious and passionate ruler who was keen to restore the Roman Empire to its former glories, but he responded brutally to any opposition to his will and lacked the finesse of his father, Constantine IV. Consequently, he generated enormous opposition to his reign, resulting in his deposition in 695 in a popular uprising, and he only returned to the throne in 705 with the help of a Bulgar and Slav army. His second reign was even more despotic than the first, and it too saw his eventual overthrow in 711, abandoned by his army who turned on him before killing him.

Constantine VI was Byzantine Emperor from 780 to 797. The only child of Emperor Leo IV, Constantine was named co-emperor with him at the age of five in 776 and succeeded him as sole Emperor in 780, aged nine. His mother Irene exercised control over him as regent until 790, assisted by her chief minister Staurakios, and eventually Constantine ruled himself, But his reign alone was short-lived, as he returned the position empress to his mother again in 792, and eventually his mother blinded and deposed him.

Theodore II Doukas Laskaris or Ducas Lascaris was Emperor of Nicaea from 1254 to 1258. He was the only child of Emperor John III Doukas Vatatzes and Empress Irene Laskarina. His mother was the eldest daughter of Theodore I Laskaris who had established the Empire of Nicaea as a successor state to the Byzantine Empire in Asia Minor, after the crusaders captured the Byzantine capital, Constantinople, during the Fourth Crusade in 1204. Theodore received an excellent education from two renowned scholars, Nikephoros Blemmydes and George Akropolites. He made friends with young intellectuals, especially with a page of low birth, George Mouzalon. Theodore began to write treatises on theological, historical and philosophical themes in his youth.

Basil II Porphyrogenitus, nicknamed the Bulgar Slayer, was the senior Byzantine Emperor for almost 50 years, having been a junior colleague to other emperors since 960. He and his brother Constantine were named as co-rulers before their father Romanos II died in 963. The throne went to two generals, Nikephoros Phokas then John Tzimiskes, before Basil became senior emperor. His influential great-uncle Basil Lekapenos was the de facto ruler of the Byzantine Empire until 985. Basil II then held power for forty years.

John II Komnenos or Comnenus was Byzantine emperor from 1118 to 1143. Also known as "John the Beautiful" or "John the Good" (Kaloïōannēs), he was the eldest son of Emperor Alexios I Komnenos and Irene Doukaina and the second emperor to rule during the Komnenian restoration of the Byzantine Empire. John was a pious and dedicated monarch who was determined to undo the damage his empire had suffered following the Battle of Manzikert, half a century earlier.

John II Komnenos or Comnenus was Byzantine emperor from 1118 to 1143. Also known as "John the Beautiful" or "John the Good" (Kaloïōannēs), he was the eldest son of Emperor Alexios I Komnenos and Irene Doukaina and the second emperor to rule during the Komnenian restoration of the Byzantine Empire. John was a pious and dedicated monarch who was determined to undo the damage his empire had suffered following the Battle of Manzikert, half a century earlier.

In 1303, the Byzantine Emperor Andronicus II Palaeologus hired 6,500 Catalan mercenaries under Roger de Flor to campaign against the Turks in the spring and summer of the same year. Their costly service came with success, driving back the Turks in parts of Asia Minor. At Philadelphia, 18,000 Turkish soldiers were left dead, the work of the Catalans.

Basil II Porphyrogenitus, nicknamed the Bulgar Slayer, was the senior Byzantine Emperor for almost 50 years, having been a junior colleague to other emperors since 960. He and his brother Constantine were named as co-rulers before their father Romanos II died in 963. The throne went to two generals, Nikephoros Phokas then John Tzimiskes, before Basil became senior emperor. His influential great-uncle Basil Lekapenos was the de facto ruler of the Byzantine Empire until 985. Basil II then held power for forty years.

Manuel I Komnenos, Latinized Comnenus, also called Porphyrogennetos, was a Byzantine Emperor of the 12th century who reigned over a crucial turning point in the history of Byzantium and the Mediterranean. His reign saw the last flowering of the Komnenian restoration, during which the Byzantine Empire had seen a resurgence of its military and economic power, and had enjoyed a cultural revival.

Basil I, called the Macedonian, was a Byzantine Emperor who reigned from 867 to 886. Born a simple peasant in the theme of Macedonia, he rose in the Imperial court. He entered into the service of Theophilitzes, a relative of Emperor Michael III, and was given a fortune by the wealthy Danielis. He gained the favour of Michael III, whose mistress he married on the emperor's orders, and was proclaimed co-emperor in 866. He ordered the assassination of Michael the next year. Despite his humble origins, he showed great ability in running the affairs of state. He was the founder of the Macedonian dynasty. He was succeeded upon his death by his son Leo VI.
Romanos IV Diogenes, also known as Romanus IV, was a member of the Byzantine military aristocracy who, after his marriage to the widowed empress Eudokia Makrembolitissa, was crowned Byzantine Emperor and reigned from 1068 to 1071. During his reign he was determined to halt the decline of the Byzantine military and to stop Turkish incursions into the Byzantine Empire, but in 1071 he was captured and his army routed at the Battle of Manzikert. While still captive he was overthrown in a palace coup, and when released he was quickly defeated and detained by members of the Doukas family. In 1072, he was blinded and sent to a monastery, where he died of his wounds.

Constantine XI Dragases Palaiologos or Dragaš Palaeologus was the last Byzantine emperor, reigning from 1449 to his death in battle at the Fall of Constantinople in 1453. Constantine's death marked the end of the Byzantine Empire, an institution tracing its origin to Constantine the Great's foundation of Constantinople as the Roman Empire's new capital in 330. Since the Byzantine Empire was the Roman Empire's medieval continuation, with its citizens continually referring to themselves as Romans, Constantine XI's death and Constantinople's fall also marked the definitive end of the Roman Empire, founded by Augustus almost 1,500 years earlier.

Staurakios or Stauracius was Byzantine Emperor from 26 July to 2 October 811. He was born in the early 790s, probably between 791 and 793, to Nikephoros I and an unknown woman. Nikephoros seized the throne of the Byzantine Empire from Empress Irene in 802, and elevated Staurakios to co-emperor in December 803. After Nikephoros fell in the Battle of Pliska on 26 July 811, Staurakios was declared emperor, despite his severe injuries from the battle. His reign was short due to the political uncertainties surrounding his wounds, which included the severing of his spine; he was usurped by his brother-in-law, Michael I Rangabe, on 2 October 811. After being removed from power, he was sent to live in a monastery, where he stayed until he died of gangrene or poisoning on 11 January 812.

George Maniakes was a prominent general of the Byzantine Empire during the 11th century. He was the catepan of Italy in 1042. He is known as Gyrgir in Scandinavian sagas. He is popularly said to have been extremely tall and well built, almost a giant.

The Syrian campaigns of John Tzimiskes were a series of campaigns undertaken by the Byzantine emperor John I Tzimiskes against the Fatimid Caliphate in the Levant and against the Abbasid Caliphate in Syria. Following the weakening and collapse of the Hamdanid Dynasty of Aleppo, much of the Near East lay open to Byzantium, and, following the assassination of Nikephoros II Phokas, the new emperor, John I Tzimiskes, was quick to engage the newly successful Fatimid Dynasty over control of the near east and its important cities, namely Antioch, Aleppo, and Caesarea. He also engaged the Emir of Mosul, who was under the suzerainty of the Abbasid Caliph in Baghdad, over control of parts of Upper Mesopotamia (Jazira).