Sandalphon is a central character in the Granblue Fantasy universe, known as the supreme primarch and the guardian of balance among the primal beasts. Originally created as one of the Four Primarchs, he later assumes the title of supreme primarch after the fall of Lucifer. Sandalphon is marked by his complex evolution from a vengeful figure to a protector, struggling with guilt and responsibility. His deep connections with other primarchs and the main cast drive much of the storyline's emotional intensity.