Gladion

Gladion is a former member of Team Skull and the second rival of the player character appearing in Sun and Moon and Ultra Sun and Ultra Moon.

Appearance
Gladion is a young boy with yellow hair and green eyes. His hair is shaved on the sides with a rip design carved into it. He has long tousled bangs that cover his forehead. He wears a grey hooded shirt with a red decoration on it, some black slashed sleeves, slashed black pants and red shoes with grey soles and black laces. He also has a red rectangular bag around his waist.

Personality
Gladion has a very serious and smart disposition. He is shown to be very strong willed, as he constantly strives to make his Pokémon strong no matter what; he stays determined. Gladion also is quite easily agitated, being bothered by the loudness of fellow Pokémon trainer Hau. Gladion often looks to be self-critical, as seen whenever he loses a battle. Even though he looks to have a rough exterior it is revealed that he is actually quite caring and thinks of the well-being of Pokémon; specifically when he shows concern for kidnapped Pokémon, and he cares about his sister Lillie deeply as well. He also cares greatly for his Pokémon Type: Null, whom he rescued from the Aether Foundation and sought to free from its metal restraint.

Sun and Moon
Some years before Sun and Moon take place, Gladion escaped Aether Paradise with one of the three Type: Null.

Gladion joined Team Skull in pursuit of strength. However, he also opposed his mother and joined with Lillie to stop her plans.

Gladion is initially crude and hostile, but after the player character joins to defeat Lusamine, Gladion becomes more open and even is impressed by the player character's strategies and post-game decides to give them one of the two remaining Type: Null.

Ultra Sun and Ultra Moon
Gladion acts similar in Ultra Sun and Ultra Moon.

Main series

 * Main article: Gladion (anime)

Gladion was Lillie's brother and Lusamine's son. The family spent many times together hanging out. However, after Lillie became assaulted by an Ultra Beast, Gladion swore to protect his sister. He went into hiding, where he could train with his Silvally. However, this also created Gladion's distrust towards Ultra Beasts, and swore to defeat them all.

With Faba's involvement, Lusamine disappeared through an Ultra Wormhole. This motivated Gladion and Lillie to find their mother, by going to Poni Island, where they could find another Ultra Beast to take them there.

Masters trailer

 * Main article: Gladion (Masters trailer)

Manga

 * Main article: Gladion (Adventures)

Gladion came to the Full Force Festival, in hopes to gain the trust of the Island Kahuna. However, he was defeated by Sun, who used a Z-Ring. Despite his defeat, Gladion swore to confront the Ultra Beasts he knew something about. To do that, he came to the Ruins of Conflict, where he was offered by Guzma a position of the enforcer.

Gladion accepted, and went to Akala Island, where he captured Tapu Lele. Once more, he fought against Sun, but this time, Gladion retreated, leaving Tapu Lele away.

TCG

 * Main article: Gladion (Crimson Invasion)

Gladion appears as a Supporter card. He debuted in Sun and Moon: Crimson Invasion card pack.