Why did Demaratus King of Sparta spread malicious stories about Cleomenes?

Demaratus, the deposed King of Sparta, spread malicious stories about Cleomenes to undermine his legitimacy and character, primarily out of personal rivalry and resentment. Cleomenes had succeeded in gaining power, which threatened Demaratus's own status and influence. By tarnishing Cleomenes's reputation, Demaratus aimed to rally support against him and restore his own position within the Spartan hierarchy. This political maneuvering reflects the intense and often ruthless nature of Spartan politics during that era.