Zapdos

Zapdos is a Legendary Pokémon that normally lives in Kanto, and is one of its three Legendaries, alongside Articuno and Moltres. Articuno has confirmed that Zapdos uses they/their/theirs pronouns.

History
In the past, Zapdos, along with Articuno and Moltres, were reputed to keep the seasons in balance: Articuno for the Winter, Moltres for the Spring, Zapdos for the Summer, and neutrality for the fall. In the present day, Zapdos, like their fellow Legendaries, is regarded as a myth or legend by much of the Kanto populace. There have not been scientifically reputable/verifiable reports of Zapdos sightings in years.

Zapdos makes their first confirmed and face-to-face appearance in 028, revealing themself to Rose, Cobalt, Victor, and their Pokémon after breaking through the ceiling of a cavern in Diglett's Tunnel. When they learn that the humans and their Pokémon were not directly responsible for the containment of their brother, Moltres, Zapdos immediately advocated killing the group, despite sampling Cobalt's jerky after some convincing from Articuno. Despite being convinced to allow Rose, Cobalt, and their Pokémon to infiltrate the Rocket base and rescue Moltres, Zapdos still shot the cavern wall with a thunderbolt and collapsed a connected tunnel in a display of power.

In 029, it is mentioned that Team Rocket has set a trap for Zapdos. In 030, they and their sister Articuno meet Moltres, Rose, and Cobalt on the roof of the Pokémon Mansion. When Moltres bows to Rose and Cobalt, they settle for screaming and releasing electricity without directly targeting the humans. They and their siblings fly off, clearing the weather around the Kanto region.

Description
Zapdos is a large bird of prey with spiky golden-brown and black plumage, a long beak, and thin talons. Their flight is said to be the cause of thunderstorms and lightning strikes.

Zapdos is impulsive and ruthless, and does not currently have a human avatar to speak through; because of this, any communication between them and humans is translated by Articuno and Blanche. Zapdos could be reasoned with, however, as they reluctantly agreed to Articuno's deal with Rose and Cobalt. They are not especially fond of humans.

Trivia

 * Although Zapdos has not been explicitly mentioned in the series yet, they may have been responsible for the thunderstorms that Rose, Cobalt, Victor, and Cira encountered while in Viridian Forest.
 * Depending on the extent of his journey, Red may have seen Zapdos.
 * Team Rocket's codename for Zapdos is "Thunderer."