Zygrade

Zygarde debuted in Hawlucha Attack. It was first mentioned by Blue, who aimed to find it in order to stop the endless battle between Xerneas and Yveltal. It physically appeared at Anistar City, where it was sought after by Essentia, who aimed to capture it for Team Flare. When X and Y battled Essentia in order to retrieve Y's stolen Xerxer, Zygarde appeared before them and attacked before Essentia managed to successfully catch it.

Zygarde was later used by Essentia to battle X, Blue, and Blaine. After Emma was freed from Lysandre's control, she was about to order Zygarde to attack him, but he managed to take its Poké Ball, fully putting it under his control. Zygarde was later used to fight X's Mega Evolved team, but as the battle progressed, Emma noticed green blobs falling off of it. At that moment, Xerneas and Yveltal returned to their dormant forms, causing it to disintegrate, and X hit it with a combined attack from his team. This resulted in Zygarde exploding into millions of green blobs, and Lysandre began to fall. Soon after the battle ended, Blue and Blaine visited Sycamore and mentioned to him about seeing a little green silhouette after Zygarde disintegrated into the blobs. Sycamore revealed to them that similar green silhouettes, which he dubbed Zygarde Cells, were spotted in a faraway region as well, and sends Dexio and Sina to investigate them in Alola.

A Zygarde Core appeared in Flash and Cosmog's Secret.

A Zygarde Cell debuted in Confusion and Monsters from Another World.

A Zygarde Cell appeared in a fantasy in Summon the Emissaries of the Moon and the Sun.

A Zygarde 10% Forme appeared in Adventure in the Dark Dimension, where it helped protect Sun in the Ultra Deep Sea. It is unable to hold the form for long, reverting to a group of Zygarde Cells.

A Zygarde Complete Forme appeared in ''Ray of Light!! Through the Crack in the Sky!'', where it combined the Cells and Cores that Sun collected using the Aether Foundations' Reassembly Unit.