|Eye color||Light brown|
|Anime debut||Mega Evolution Special I|
|English voice actor||Zoe Martin|
|Japanese voice actor||Mikako Komatsu|
Mairin first appeared with her Chespin, Chespie, jumping on some rocks on a river. She heard a lot of noise, which came from Alain's and Astrid's battle. Mairin went to the place where Alain and Astrid were battling, and hid behind some bushes while she watched the battle. She was surprised to see that the appearances of Charizard and Absol were different. She was even more surprised when they reverted back to their original forms.
After the battle, Alain caught her hiding from afar and told her to come on out. Mairin explained to him how she was confused about his Charizard's different appearance in which Alain confirmed it as Mega Evolution. She then told him about a Trainer who saved a Garchomp from going berserk. When Alain got a call from his Holo Caster, Mairin followed him to the location he was told to go to. After arrival in some old ruins, Mairin was unable to locate where he had gone. She found Alain when he was looking at the ruins' interior.
When Remo showed up and wanted to battle Alain, he told Mairin to go hide. Mairin continued to follow him despite Alain telling her not to. After the battle, they encountered a Flabébé and Mairin battled it with Chespie. She had trouble landing a single hit on the Fairy-type Pokémon, and after dodging a Pin Missile and Vine Whip, it laughed at her. Alain advised Mairin to use a move to inflict Poison or Confusion to slow Flabébé down. As such, Mairin ordered Chespie to use Toxic. Mairin threw a Poké Ball and caught the Flabébé. She went to the Pokémon Center to heal the Poison and she gave the Flabébé the nickname Bébé. While Mairin was busy, Alain left to a restaurant where Siebold was.
Mairin went to the restaurant and Alain and Siebold began their battle, with Siebold ultimately being the victor. Mairin was eventually accepted as a companion of Alain as he told her to do whatever she wanted.
In Mega Evolution Special II, Mairin accompanied Alain on an airplane to the Hoenn region. They got off at an airport there. After tripping on the edge of the mountains and crashed into a tree, she met Steven Stone after helping her up. Mairin then watched Steven and Alain battle behind the tree she crashed on. After the battle was interrupted, Mairin was introduced to Lysandre who mistakes her as Alain's sidekick.
Mairin went with Alain, Steven, and Lysandre to the ruins. She watched as the three uncovered a giant megalith. The research of the rock accidentally awakened Rayquaza who became furious about it. Alain had Mairin go into hiding while he and Steven took care of the Legendary Pokémon, to no avail. With the megalith gone and the ruins destroyed, Mairin went with Alain and Steven to Rustboro City to investigate the whereabouts of the megalith.
She reappeared in Mega Evolution Special III where she arrived in the Devon Corporation with Alain. After witnessing the legend between Groudon and Kyogre being told on a TV screen, Mairin stated that she did not want to get involved with Groudon and Kyogre as she saw Rayquaza become angry back in the ruins. Alain left, calling her a stowaway to Steven even though he cared for her safety.
While Alain and Steven were flying to where Primal Groudon and Kyogre were at the side of Rustboro City, Mairin and Chespie somehow snuck onto the plane and saw the fight. After Alain's Mega Charizard X was tremendously overpowered by Primal Groudon's Precipice Blades and the giant ice shards knocking out Alain, Mairin ran to him and took him to a cave. She then witnessed the same Rayquaza before who managed to stop the fight between Groudon and Kyogre, and then returned to their original forms. She was happy to see that Alain was alright.
Following the fight, Alain returned to Kalos on his own, knowing that Mairin would have been in more danger if she was with him. Steven offered to take Mairin back to Kalos too and she accepted.
In Mega Evolution Special IV, she reunited with Alain in Lysandre Labs. However, Alain still insisted on pushing her away despite her protests. Upset at this, she asked Chespie to give her a moment alone. Unfortunately, this caused Chespie to stumble upon an experiment that overloaded, exposing it to near-fatal levels of a strange energy. Although Chespie was able to rescue the Zygarde Core being experimented on, it quickly fell into a coma. Mairin was horrified to discover that something had happened to Chespie, and the news that there was nothing Lysandre Labs' Nurse Joy could do beyond stabilise it was the tipping point into despair; all the broken Mairin could do was tearfully beg Lysandre to assure her that Chespie would wake up. After this devastating turn of events, Mairin stops travelling until Chespie recovers; she is implied to be unaware that this depends on Alain helping Lysandre complete his plans for the Mega Evolution energy system.
She appeared in XY105, still at Lysandre Labs with the comatose Chespie. Alain called Lysandre for an update on her situation, only to be informed that nothing had changed at the time.
Mairin is rather clumsy, often falling or tripping whenever she walks. Her Chespin, who travels with her outside of its Poké Ball, is quick to act in case her trips end up being too dangerous, in one instance having to grab her with vines to pull her back up after she fell off of a somewhat small ledge.
Mairin has a fairly forceful attitude, despite being a new Trainer. When asked who she is by Siebold, she proudly declares herself as Alain's traveling companion, despite being told by Alain to not follow him, and being left behind by him more than once.
She cares for Alain's well-being, questioning him on more than one occasion as to why he would want to put himself into risky situations. As such, when Alain yelled at her at the Devon Corporation, and again at Lysandre Labs, she burst into tears as a result of Alain's lashing out. Her emotional state took a turn for the worse after Chespie fell into an unexplainable coma, forcing her to put her travels on hiatus until Chespie recovers.
This article is missing information on this character's Japanese voice actor and English voice actor.
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| Mairin's starter Pokémon is a Chespin that she nicknamed Chespie (Japanese: ハリさん Hari-san). Chespie remains outside its Poké Ball. It is helpful as it rescues Mairin when she falls over and helped her catch her Flabébé.
Chespie reappeared in Mega Evolution Special II where it was accompanying Mairin in Hoenn.
It reappeared in Mega Evolution Special III. It accompanied Mairin whilst she snuck onboard a helicopter as Alain forbid her from coming. It protected Mairin from ice shards caused by the rampage of Primal Groudon and Primal Kyogre who was trying to get a knocked out Alain to safety.
It reappeared in Mega Evolution Special IV, in which it accompanied Mairin to Lysandre Labs. After Alain refused to allow Mairin to travel with him, she asked Chespie to give her a moment alone. This resulted in Chespie following two scientists to a room where it found a Zygarde Core and some cells being subjected to some sort of evidently painful experiment. Chespie rescued the Zygarde after the equipment overloaded, but the energy Zygarde had been subjected to caused Chespie to fall into a coma, devastating Mairin.
|Debut||Mega Evolution Special I|
| Mairin captured this Yellow Flower Flabébé with Chespie's aide, which she nicknamed Bébé (Japanese: フラちゃん Fla-chan).
Bébé's only known move is Magical Leaf.
|Debut||Mega Evolution Special I|
|Japanese||マノン Manon||From Manon (a feminine French name) and marron (French for chestnut) or ハリマロン Harimaron (Chespin).|
|English||Mairin||Similar to her Japanese name|
|French||Martine||Similar to her Japanese name|
|German||Michaela||Similar to her Japanese name|
|Italian||Marin||Similar to her English name|
|Korean||마농 Manong||Transliteration of her Japanese name|
|Chinese (Mandarin)||瑪農 Mǎnóng||Transliteration of her Japanese name|
|Chinese (Cantonese)||瑪農 Máhnùhng||Transliteration of her Japanese name|
|Thai||มานอน Manon||Same as her Japanese name|
|This movie article is part of Project Anime, a Bulbapedia project that covers all aspects of the Pokémon anime.|