What This Greek statesman ended the rule of the tyrants?

The Greek statesman who ended the rule of the tyrants in Athens was Cleisthenes. Often referred to as the "Father of Athenian Democracy," he introduced significant political reforms around 508-507 BCE that established a more democratic government and diminished the power of tyrants. His reforms included reorganizing the political structure and allowing greater participation of citizens in governance, laying the foundation for the democratic system in Athens.