Dusk was a Twilight Dragon who visited Earth during the early stone age and came across a young woman who he named Kaosa, the two grew to hold a strong bond that was tragically shattered when a group of savage hunters slayed Dusk after being alerted to his location in secret by the immortal Ebonscale.

Dusk's senseless murder installed within Kaosa a deep hatred of humanity and despite his pleas for her to forgive and resist the call of the Twilight Force she would take his place in the Twilight Dragon-Flight and would later become its Brood-Mother.