Anzu

"'How are we gonna make it with THOSE things flying around and coming out from the sand? Climbing their wings and stab their body or something?' - Zéfyr Raiu to his team."

The Anzu is a rare flying Grimm that seems to only be found on the deserts of Vacuo.

Appearance
A giant winged serpent-like creature with no limbs and four wings: two frontal wings that are as big as their body, and two smaller ones near the tail. An Elder Anzu has protection on the head, torso, tail and frontal wings whereas a Young Anzu only has protection on head and frontal wings.

The difference between an Elder and a Young Anzu is the size: Young Anzus are only half the size of an Elder.

Abilities
The Anzu is capable of burrow beneath sand and fly. Their massive and armoured wings allow them to destroy stone and ice with ease, and despite their massive size, they are fast when they return to the ground, causing a massive shockwave. Even young Anzus are tough enough to endure gunfire and dust attacks, and move slightly faster than elders.

Behavior
Anzus could probably be the most serene of all Grimm, as they will never attack humans unless they are the ones who attack first, or when a massive amount of Grimm is nearby them. While they are barely attracted to humans/faunus, they can be found wandering around human-made structures.

When in the air, they'll lower their wings to such point that they touch the surface of the desert, just to steer themselves and go up again. When an Anzu is disturbed, it'll begin to fly closer to the sand, chasing the group of humans/faunus or surrounding them using its wings as walls. It will dive into the sand and burst form it more often and fiercely.

Weaknesses
There are certain parts on their neck, torso and tail that are weak against melee, explosive and dust weapons. Bullets are pretty much useless against an Anzu. These weakspots are located in between the bone-like plates that have a red pattern.

Another weakspot is its wings, hitting their "bottom" part will eventually make the Anzu fall and not able to fly again if they received enough damage.

Location
While they don't have an exact location, it is theorized that the Anzu only lives in the deserts of Vacuo, as they haven't been found in other regions or continents. And despite of being a rare sight, they are rather common to see on abandoned places.

Trivia

 * The Anzu or Zu is a mythological creature from Mesopotamian religions.
 * It is highly inspired by the 13th Colossus from the videogame Shadow of the Colossus. The weakspots are also a reference to said Colossus.
 * Due to its behavior, it is possible use them as a mean of transport. Althought it will try to shake the nuisance off its back.