In Day Three Blockbusters!, she was revealed to have evolved into a Braixen. In a flashback of Shauna's, Aria and Braixen were shown to have participated in many Pokémon Showcases together. Eventually, she and her Trainer managed to enter the Master Class tournament and win. The victory gave Aria the title of Kalos Queen.
As a Braixen
Braixen physically debuted in Dreaming a Performer's Dream!, where she and her Trainer gave an exhibition performance at the Lagoon Town Pokémon Showcase Rookie Class. She showed off her Fire-typemoves and proceeded to toss her wand back and forth with her Trainer. She finished her performance by showing off her Fire Blast attack.
In Battling with Elegance and a Big Smile!, Braixen was revealed to have evolved into a Delphox. She battled alongside Aria's Aromatisse against Serena's Fennekin and Pancham in a Double Battle. Her Trainer, using the alias Ariana (Japanese: エレーナElena), had earlier suggested a battle with Serena to help her regain her confidence. Delphox and Aromatisse worked well together, dominating the battle field until Serena's Fennekin evolved into Braixen. However, Aria was called away and the battle ended before reaching a conclusion.
In Master Class is in Session!, Delphox watched the Pokémon Showcase Master Class in Gloire City alongside her Trainer. In the following episode, she performed in the final round alongside Aromatisse and Vivillon, trying to defend Aria's title from Serena. Delphox combined Mystical Fire with Vivillon's Psybeam and finished the performance with Fire Blast. In the end, Aria's performance received the most votes, causing her to retain her title of Kalos Queen.
Personality and characteristics
Delphox in the Master Class
When shown as a Fennekin, Delphox seemed to have a lot of fun while performing. It has been stated that, in order to make an effective Pokévision video, the Trainer and Pokémon in question should share a close bond. Given that Aria and Fennekin's video ranked so highly with the public vote, this can be inferred to be the case with them both. As she progressed through evolution, Delphox became more serious and elegant, conserving her energy before leaping into performances wholeheartedly. Like Aria, Delphox faces victory with delicate modesty.