Emissary of its creator Xiuhtecuhtli, Zoltar is a symbol of Rebirth. Born from the deepest flame river in Muspelheim, Zoltar never uses its abilities to cause harm. Unless provoked, it instead acts as a benevolent and majestic herald of the Titan of Life. It inspired many human tales and, as depicted in those, it is able to be reborn if it ever is defeated - or if it just feels like it is time for a change. As such, Zoltar is always changing, each death and rebirth leading to a new, unique life and personality.

Since his master nurtures good relations with Gaia, Zoltar is often seen in Terra where it is well welcomed by the Terran Titanness as both of them share a mutual respect towards one another, Gaia being fascinated by the Rebirth concept while Zoltar is always amazed by the evolutions in Gaia's life designs.