Charlemagne
Charlemagne was a Frankish king of the eighth century that had successfully attained his status of Western mythical proportions. Among many other things that he did, Charlemagne was the one who united most European regions under his reign by sword power and helped restore the Roman Empire in the West before becoming its very first emperor - which is the reason he managed to make it into this list at top 5. Not stopping there, Charlemagne also facilitated an intellectual and cultural renaissance, whose ramifications are still felt years afterward.
To be more specific, around 800 CE, Pope Leo II crowned Charlemagne the "Romans' emperor", reviving the Western Roman Era after its unfortunate dissolution in the 4th century. Why was Charlemagne chosen among other competitors? That was mainly because of his long-lasting protectorates over the papacies. And that protector status grew explicit around 799 after the pope got attacked and had to flee for asylum. The follow-up negotiations rendered Leo's comeback as the pope, along with Charlemagne's coronation as the Romans' emperor.
In the first 30 years of his reign, the country was characterized by military campaigning. Out of all projects, the campaigns against the Saxon tribes are the most long-lasting and difficult ones. After decades of on-and-off fighting, bloody reprisals, and betrayed truces brought to the table, the Saxon armies eventually resigned in 804.
Born-Died: 747 - 814
Title: King of The Romans
Reign: 768 - 814