La Reine des Morts, also known as the Undead King, is the primary antagonist of the anime Suicide Squad ISEKAI. She is a powerful necromancer who originally killed Queen Aldora of the kingdom and assumed her identity, using the disguise to ignite a prolonged war between the kingdom and the empire. Her true goal is to fill the world with death, raising the fallen as an undead army to serve her. La Reine des Morts appears at first as a stern, dismissive ruler who cares little for the suffering of her people, but this facade conceals a ruthless and ferocious nature. She is a master of death magic, capable of controlling legions of the undead and wielding dark spells to achieve her ends. Her role in the story is that of the hidden mastermind behind the conflict that the Suicide Squad is sent to resolve. She directly manipulates the war from the shadows, using her necromantic powers to amass an ever-growing force. Key relationships include her antagonism toward the Suicide Squad, especially Harley Quinn, as well as her influence over the rogue generals from the previous Suicide Squad who joined her cause. Throughout the series, her true identity is gradually uncovered, leading to a confrontation where her power and motivations are fully revealed. She is cunning, patient, and utterly dedicated to her vision of a world consumed by death.