Vanessa

Vanessa (Japanese: ヴァネッサ Vu~anessa) is the female player character in Her male counterpart is Marcus.

In the games
Selene is a girl who recently moved from the Kanto region to Melemele Island in the Alola region. Early in her adventure, Selene meets the guardian deity of Melemele Island,, and quickly befriends Lillie, her Nebby, and Hau. After receiving a starter Pokémon and Z-Ring or Z-Power Ring from Melemele's island kahuna, Hala, Selene begins her island challenge in earnest.

During her island challenge, Selene encounters Team Skull, a group of hooligans harassing people and interfering with the island life; the Aether Foundation, an organization dedicated to protecting Pokémon; and Gladion, a mysterious boy who works as an enforcer for Team Skull. She also learns about Ultra Beasts, mysterious creatures that exist in a dimension called Ultra Space; and about Professor Kukui's dream of building an Alolan.

Pokémon Sun and Moon
Selene eventually finds out that Lusamine, the President of the Aether Foundation, is the mother of both Lillie and Gladion and obsessed with Ultra Beasts. She ends up kidnapping Nebby and using its powers to unleash hordes of Ultra Beasts across the Alola region and travel to Ultra Space. Selene and Lillie travel to Poni Island to search for a way to find her. After Selene has completed all of her island challenge trials, she and Lillie perform a ritual that causes Nebby to evolve into the Legendary Pokémon or, who takes them to Ultra Space. Selene confronts and defeats Lusamine, and they're brought back to Alola by Nebby.

After Nebby, Selene climbs to the summit of Mount Lanakila and takes on Alola's newly established Pokémon League and Elite Four. After defeating them, she battles and defeats the League's founder, Professor Kukui, and is declared the first-ever of Alola. During the subsequent celebration in Iki Town, Lillie take Selene to the Ruins of Conflict, where the newly crowned Champion faces Tapu Koko in battle.

Selene is soon contacted by Looker and Anabel of the International Police, who request her help in catching the Ultra Beasts unleashed into Alola due to Lusamine's actions. Selene agrees to this and successfully catches all the Ultra Beasts roaming around Alola.

Pokémon Ultra Sun and Ultra Moon
During her travels, Selene encounters a group of strange pale people known as the Ultra Recon Squad, who are later revealed to be working with the Aether Foundation. When Lillie and Nebby are kidnapped, Selene follows them and finds out that Lillie's mother Lusamine is seeking to travel to Ultra Recon Squad's home world to stop a Pokémon known as before it can threaten Alola. She successfully uses Nebby's powers to travel to this alternate world, leaving Lillie and Selene to figure out how to follow her. They travel to Poni Island and perform a ritual that causes Nebby to evolve into the Legendary Pokémon Solgaleo or Lunala. However, before Selene and Lillie can go after Lusamine, she's suddenly thrown out of an Ultra Wormhole before them, followed by Necrozma. Necrozma proceeds to battle and absorb Nebby, before traveling back to Ultra Space. With the Ultra Recon Squad's help, Selene travels to their home world of Ultra Megalopolis, where she defeats Necrozma once again and saves Nebby.

After completing her last island challenge trial, Selene climbs Mount Lanakila to reach the newly established Pokémon League at its summit, re-encountering Necrozma along the way. After Selene has defeated the brand-new Alola Elite Four, Professor Kukui arrives and presents Hau as her final challenge before she can claim the championship. Selene successfully defeats Hau one last time, making her the first Champion of Alola.

Later, Selene assists the Ultra Recon Squad in catching some Ultra Beasts roaming around Poni Island. But no sooner has she returned home that she learns of an evil organization called Team Rainbow Rocket appearing in the region. The team takes over Aether Paradise, sets up their base on it, and kindnaps Lusamine. Selene storms the base and takes down the members of Team Rainbow Rocket, including their leader, Giovanni, saving Lusamine and making Team Rainbow Rocket leave Alola.

GOTCHA!
Selene briefly appeared in GOTCHA!.

Pokémon Evolutions
Selene appears in The Eclipse. She traveled to Altar of the Moone with Lillie, playing the Moon Flute alongside Lillie's Sun Flute to allow Nebby to evolve into. After Nebby had been defeated and absorbed by, Selene prepared to battle the.

Pokémon Adventures
Selene's counterpart in Pokémon Adventures is Moon, who is an expert pharmacist.

Pokémon Horizon
In Pokémon Horizon, Selene has a counterpart named Mana, who is three years younger than Selene.

Trivia

 * Pre-release media for referred to Selene as both Moon (Japanese: ムーン Moon, Korean: 문 Moon) and Selene.
 * Pre-release media for referred to Selene as Ailey (Japanese: コウミ Koumi, Korean: 울트라문 Ultra Moon).
 * Unused internal data refers to Selene as (Japanese: ラナ Lana), Hawaiian for afloat. Coincidentally, this name would be used in English for a different character.
 * One of 's palette swaps in Super Smash Bros. Ultimate has a color scheme based on Selene's design in, specifically one of her darker-skinned appearances.
 * Additionally, Selene's Casual Cap from Pokémon Sun and Moon is worn by in one of the two alternate female costumes.