The viadante is a normal adoptable.
Viadante are bat-like demons, with large, curved horns and wings attached to their forearms. The beta form is small and relatively harmless in appearance.
The natural omega form is gargoyle-like in appearance, stone grey in colour, with glowing yellow eyes. The vital form is a more yellow-grey in colour, with golden accents, while the tainted form's colouration leans more towards blue shades.
In-Game Description Edit
"Shadowy bat-demons that feed on peoples' souls and create vampires. They are responsible for most undead in the world, though most of them live in and around Hel."