The leupaks are a race of sentient monsters, originally created by the Dreamwaker with the aid of the Fatis Mirajin. Leupaks are a highly variable species, coming in a wide array of colours, patterns, adornments, shapes and sizes. It is rare for two leupaks to share the same appearance, as even among established bloodlines, individuals may vary greatly. Leupaks may be solitary, or live in groups known as gigs. Certain specialised gigs known as Houses also exist. Leupak venom, like many of a leupak's other features, varies between individuals and bloodlines.