Gustavio is a Wind Ink Demon that wields the power of wind magic. He is 28 years old and the last of his kind ever since an event known as "The Interdimensional Extinction", which he does not like to go into detail about. His father passed away after this extinction event, but before his death, he told Gustavio to inform Emperor Kidala, which is Alakid's father, about the other survivors of the extinction before sending him off. Gustavio is mostly self-taught in combat arts and his magic.