Arven is an upperclassman at the Naranja AcademyS/Uva AcademyV. He is skilled at cooking, and is a researcher of healthy recipes to make Pokémon feel better.[2] He always carries a copy of the Scarlet BookS/Violet BookV with him.[3] He is enrolled in the humanities track of the Academy, with his homeroom teacher being Salvatore.
Spoiler warning: this article may contain major plot or ending details.
Arven is the son of Professor Sada/Turo and their unknown colleague. Due to the professor's devoutness to their research and the Tera Project, Arven mostly grew up alone in the lighthouse laboratory on Poco Path. The strained relationship led Arven to devote most of his time to his companion Mabosstiff (originally a Maschiff) as well as learning to cook and clean. He enjoys picnics, especially their outdoor settings and the Sandwiches made. At some point, the professor succeeded in creating a working time machine, bringing Paradox Pokémon to the present time. One such Pokémon was KoraidonS/MiraidonV, which the professor brought to the lighthouse for safekeeping, instructing Arven to keep it a secret. However, multiple people ended up witnessing the Legendary Pokémon attacking several wild Pokémon, and the professor was forced to bring the Pokémon back to the Zero Lab. Arven would end up not seeing his parent again until the ending events of the game, causing him to blame and loathe the Legendary Pokémon for taking his parent away from him. Eventually, he and Mabosstiff visited Area Zero in an attempt to find his parent, only for Mabosstiff to be attacked by a creature Arven describes as either "rampaging"S or "metallic, machine"V. After taking a Flying Taxi out of the Great Crater of Paldea, he tried to heal Mabosstiff using a Pokémon Center and Potions, only to have failures due to his injuries being a special case. In desperation, he skipped his classes to research and attempt almost every cure available, yet he was not successful. At some point, he sifted through the Scarlet BookS/Violet BookV and learned of the legendary Herba Mystica, and - seeing his chance at revitalizing Mabosstiff - began to research them.
The player and Nemona first meet Arven on Poco Path, after meeting and being rescued by KoraidonS/MiraidonV. Arven was searching his old home, the lighthouse lab, where he found a book previously owned by the professor, the mysterious Scarlet BookS/Violet BookV. When Nemona recognizes him as their son, he becomes angry and tells her that his parentage doesn't matter. Still, he is surprised to see the Legendary Pokémon outside of Area Zero, and the weakened state that it is in. After he learns the truth of what actually happened, he challenges the player to a battle with his newly caught Skwovet to test whether or not they can control the Paradox Pokémon. In defeat, he lets the player take the Legendary off of his hands and gives them Koraidon's Poké BallS/Miraidon's Poké BallV and runs down Poco Path on his way to the Academy, while Nemona yells at him to answer her questions.
Path of Legends
After the player's first class, Arven is waiting for them at the Cafeteria. Already knowing their name due to them becoming a school celebrity, he asks the player to help make his dream a reality: to help him defeat five Titan Pokémon so he can create recipes with the Herba Mystica, special herbs that heal any Pokémon that eats them. From his research in the Scarlet BookS/Violet BookV, the Titans are incredibly strong, but because he isn't proficient at Pokémon battles, he requires the help of a strong trainer, hoping the player would assist them. He asks them to think it over, and registers the locations of the titans on their Rotom Phone's map.
After attending the Academy's opening ceremony for the annual "Treasure Hunt," he finds the player and Nemona in the center of Mesagoza, below the steps to the Academy, conversing about Pokémon Gyms. He scolds Nemona for suggesting that the player would attempt to reach Champion Rank instead of assisting him in acquiring the Herba Mystica, much to her surprise and disapproval. When the player receives a sudden call from the mysterious character Cassiopeia regarding disbanding Team Star through defeating the bosses, he once again criticizes the idea, but is surprised when the stranger mentions him by name. After Nemona assures the player that they are free to follow whichever path they choose, Arven almost reveals his true intentions in his quest, but quickly changes the subject, mentioning how he plans to create the world's greatest sandwiches with the Herba Mystica. At this mention of sandwiches, KoraidonS/MiraidonV exits their Poké Ball, angering Arven. The player mounts the Legendary, and he tells them that the best start on their search for the Titans will be past the east gate of the city. Afterwards, he leaves in frustration when Nemona recommends the opposite west gate for the path towards the Gyms, informing the player that he will see them soon.
Over the course of the game, the player participates in the Path of Legends storyline, joining Arven in defeating Titan Pokémon and creating various sandwiches using the Herba Mystica to both cure Mabosstiff and restore KoraidonS/MiraidonV's power. Fortunately, the power of all five sandwiches restores the Legendary Pokémon to full strength, as well as bringing Mabosstiff's health back completely, making Arven ecstatic.
Post-game
The player battles Arven as their first opponent in the first Academy Ace Tournament. He can be battled as a random opponent in subsequent Academy Ace Tournaments.
Upon the third unique interaction with Arven in the League Club Room, he will trade a Skwovet to the player in exchange for almost any Pokémon excluding Shiny, Legendary, or Mythical Pokémon.
Arven appeared in Breathe Out. He was first seen reading a book while walking on Glaseado Mountain, where he ran into Ohara. Arven was abruptly attacked by a wildCetitan and began to sprint in order to outrun it. He tripped and fell into the snow, but was saved by Ohara, who was able to calm Cetitan down with her flute.
Arven was introduced as a Supporter card in the Pokémon Trading Card Game during the English Scarlet & Violet Series (the Japanese Scarlet & Violet Era). It was first released in the Japanese Violet ex expansion and the English Scarlet & Violet expansion, with artwork by GIDORA. An ultra rare print illustrated by the same artist, and a special illustration rare version of the card with artwork by kantaro were released in the same sets. It lets players search their deck for an Item card and a Pokémon Tool card, reveal them, and put them in their hand. Afterwards, the player shuffles their deck.
Arven is shown with a Maschiff in Battle Studies classes, despite his Mabosstiff having already evolved in the story and him not being shown to own a different Maschiff anywhere else in the game.
Excluding Mabosstiff, all of Arven's Pokémon are related to food or cooking: Cloyster represents oysters, Toedscruel represents mushrooms, Garganacl represents salt, Scovillain represents peppers and spices, and Greedent is known to collect and store Berries.
A version of the framed photograph in Arven's dorm room can be seen in the Zero Lab, with a younger Arven fully in frame with his Maschiff.
All of the Pokémon Arven uses against the Titan Pokémon have type advantages against the Titan Pokémon, with the exception of Greedent.
Arven's Greedent does, however, know the Grass-type move Bullet Seed, which is super effective against Titan Dondozo, but it knows no moves that would be super effective against Tatsugiri.
There is a possibility for Arven's Pokémon to appear as a Shiny during the Multi Battles against the Titans. However, they will not remain Shiny in any further battles.
Before Arven Terastallizes Mabosstiff, he holds his Poké Ball upside down.
Arven was awarded the 2022 Famitsu Dengeki Game Award for Best Character. During the event, Pokémon Scarlet and Violet director Shigeru Ohmori explained via a written message that Arven's character was based on his personal experience of losing his parents at a young age.[4]