Avion

"Thy next foe is... It casts a colossal shadow across a misty lake... as it soars through the sky...To reach it is no easy task..."

- Dormin

The Fifth Colossus, nicknamed Avion, is a major antagonist from the video game Shadow of the Colossus. It is the fifth boss encountered in the game and a vessel for the essence of Dormin.

Past
Avion, along with the other sixteen Colossi, were created by Lord Emon to contain the fragmented essence of the defeated evil Dormin. He set them all to wander the Forbidden Lands, destroying anyone that comes their way, so that Dormin could never be resurrected.

Shadow of the Colossus
When a young man named Wander trespasses in the Forbidden Lands and asks the disembodied spirit of Dormin to resurrect his deceased lover Mono, Dormin agrees under the condition that Wander kill all sixteen colossi (tricking Wander into releasing his essence so he may be reborn). Wander agrees, and sets off.

Avion is the fifth colossus he encounters, flying over crumbled ruins on a solitary lake. Once Wander reaches a certain point in the ruins, he must shoot Avion with an arrow, angering the colossus and causing it to swoop down and try to ram Wander with its wings. Wander must leap to Avion's incoming wing and grab on to the fur on it to mount Avion, who will immediately try to shake him off. Wander must hold on tightly, while also making his way to the tips of Avion's wings and the end of its tail where its weak points are located, stabbing them. After they are stabbed, Avion will flap its wings and perform barrel rolls to shake Wander off. If Wander falls, he must enrage and jump on Avion again. After all of the sigils are stabbed, Avion will fall into the lake below and die, releasing the fragmented essence of Dormin contained within its body.

This fragmental part of Dormin will bring Wander back to the Shrine of Worship, where he will be prepared to face his next foe. It will later combine with the other fifteen parts to form Dormin, who will posses Wander and later be banished by Lord Emon.

Avion's corpse can be seen as the credits roll.

Trivia

 * Avion is often considered one of the best colossi fights in the game, and has even been ranked as one of the best boss battles in video gaming.
 * Avion is considered one of the most passive of the colossi, as it does not attack unless provoked.