• English / United States: Serena's Braixen
• Japanese / Japan: セレナのテールナー
• Japanese (Romanized) / Japan: Serena no Tairenar
• Japanese (TL) / Japan: Serena's Tairenar

Serena's Braixen is the evolved form of Serena's Fennekin. It evolved during a double battle against Aria shortly before the battle was called off as Aria had to leave. Serena asked Tairenar to bear with her from now on after it evolved.

Broken Twig

While practicing for their upcoming Tripokalon, Serena's Pancham accidentally hit Braixen and caused it to break its twig. It was very sad that it was broken and no matter what twig that they tried to get to replace it, it didn't want it. Serena had once told it that the moves launched from that broken stick would definitely allow them to become Kalos Queen, so it was quite attached to that particular stick.

Nurse Joy (Kalos) suggested to Serena that she visit Woodward, a master wood grafter, in order to get Serena's Braixen's twig fixed. Initially Woodward insinuated to Serena that if her and Braizen's feelings were strong enough, he'd be able to put 100 percent of his effort into fixing the twig and the way to show that was to have a Pokémon battle with him as he believes they are the best way to know a Pokémon's feelings.

Woodward's Gallade battled against Serena's Braixen but it had a severe type disadvantage. The battle was only to teach Serena and Serena's Braixen about their feeling for each other and that in the long run the twig that was broken wasn't that important. Woodward's Gallade seemly lost the battle after it was stopped when Serena's Braixen hit it with a direct hit from Fire Blast.

After the battle, Woodward revealed that by the time she had brought the stick to him, it was already beyond saving. He believed that Serena's Braixen already knew the reason why he had her battle.

He explained that it's important to cherish tools, but as with anything, being too choicy about them is not a good thing. When Serena's Braixen tried using Flamethrower with its broken stick, it turned into Fire Blast. It may have been coincidental, but it was Serena's Braixen strong feelings that made Fire Blast launch from that broken stick. He finished off by saying that if it had feelings as strong as what he'd seen in the battle, he was certain that it could master any kind of tool.

Serena's Delphox is the evolved form of Serena's Braixen. It evolved sometime before it participated and won the Lilycove City Pokémon Contest.