Goetia

Goetia, appearing in Fate/Grand Order (FGO), is the Beast I and the primary antagonist of the first part of the story. Originally, he is an aggregation of the 72 demon gods dwelling within the corpse of King Solomon after his death. Goetia presents himself as the "Mage King Solomon", orchestrating the Incineration of Humanity, seeking to convert human history into energy to create an ideal world without death. He wields powerful magecraft, controls the 72 demon gods, and possesses a unique "mirror" characteristic, reflecting different personalities depending on his interlocutor. Goetia aims to become the sole supreme being on the planet, even at the cost of exploiting human history. He possesses three Noble Phantasms, the most famous being "Ars Almadel Salomonis," which converts human history into thermal energy, enabling time reversal. Ultimately, Goetia is defeated by the protagonists but briefly comprehends human emotions before his demise.