Lete is the king of the underwater Kingdom of Kaien, the setting of the film That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea. He is initially misled by his minister Djeese and the antagonist Zodon into believing that Yura, the priestess of Kaien, has betrayed the kingdom and that the Demon Lords are planning an attack. After Rimuru Tempest exposes the truth and reveals the deception, Lete reconciles and makes peace with Rimuru and his companions. No further details about his personality, motivations, development, or notable abilities are available from reliable sources.