Green Lantern: The Animated Series (2011)

S1E10 Regime Change

Hal and his crew arrive back on the planet Betrassus to assist Queen Iolande in her struggle against a formidable adversary—her own brother, Prince Ragnor, who has aligned himself with the Red Lanterns. As tensions rise, Hal and his team must navigate the complexities of royal politics and thwart Ragnor's ambitions to seize the throne.