Falcon

The Falcon is a robotic bird created by Dr. Julien, and was made to the lead the Ninja to good fortune.

After Zane found out about his family and that he was a Nindroid, he kept the Falcon as a pet, and is later used as a spy. Then, when training, Zane used the Falcon for his new Falcon Vision so when a Venomari spits venom at him, he can activate it and see through the Falcon's eyes instead of his own.

Home
Zane decided to follow the Falcon when it copied Zane's movements. The Falcon lead him to the construction of Lloyd's Treehouse Fortress.

After the Monastery was burned down while the Ninja destroyed the Treehouse, Zane followed it again and was lead to the Destiny's Bounty.

Never Trust a Snake
The Falcon appeared in Zane's dream of meeting the Green Ninja.

Tick Tock
Zane noticed the Falcon while he was in Jamanakai Village, and decided to follow it. The Falcon led him through different terrain until they reached Birchwood Forest, where it dropped to the ground and began malfunctioning, revealing it to be a robot.

All of Nothing
While the Ninja were training for the Serpentine attack, Zane demonstrated his new Falcon Vision in preparation for the Venomari.

When the Ninja ambushed the Serpentine's Underground Fortress, Zane was sprayed with Venomari Venom, which forced him to use Falcon Vision in order to stop hallucinating.

Wrong Place, Wrong Time
The Falcon arrived at the Destiny's Bounty with footage of the Serpentine in the City of Ouroboros.

The Day Ninjago Stood Still
When strong earthquakes sent Ninjago City into a state of panic, Zane used his Falcon to scout for danger.

The Last Voyage
Zane was worried about the Falcon as he had not heard from it in a while, though suddenly his Falcon Vision activated, and he rushed to the bridge and connected his vision to the screen in order to show the Ninja as well.

The Falcon had arrived at the Island of Darkness and was watching the Stone Warriors, however, one of the Stone Warriors sent a projectile at the Falcon, which abruptly ended the transmission.

Island of Darkness
While the Ninja looked for the Temple of Light without being caught by the Stone Warriors, Zane spotted his Falcon in one of the forts.

However, after he obtained it the Stone Warriors noticed him, leaving Zane cornered. The other Ninja decided to help him escape the Stone Warriors, only to be detected by the entire Army.