Who was the leader of the Huns who conquered much of Eastern Europe?

Attila was the prominent leader of the Huns who is best known for his conquests across much of Eastern Europe during the 5th century. Known as "the Scourge of God," Attila unified the Hunnic tribes and led numerous campaigns against the Roman Empires, instilling fear with his military prowess and strategic leadership. Under his command, the Huns managed to invade and threaten both the Eastern and Western Roman Empires, contributing significantly to the instability in those regions. His reputation as a formidable conqueror remains significant in historical accounts of the period. The other names listed, such as Genghis Khan and his successor Ogedei, belong to the Mongol Empire, which rose to prominence later in the 13th century and are not relevant to the context of the Huns and their leader Attila.