XY Arc (chapter 1)
Alexa and Viola visit Vaniville Town to interview the Sky Trainer and past Rhyhorn racer Y. While they are there, Xerneas and Yveltal appear and battle, demolishing the town. The sisters try to catch everything on camera.
Later, in Lumiose City, Alexa finishes up her report on the attack on Vaniville Town. She receives a Holo Caster call from her injured sister, Viola, who asks Alexa to help X and his friends against Team Flare. Alexa goes to Prism Tower to interview Professor Sycamore for her article, but her editor tells her that he already did it.
After the professor leaves, the editor takes Alexa's article and burns it, saying that he can't let the truth be released. He then attacks her with his Pangoro, but X intervenes, battling him as Y pulls Alexa to safety with the rest of the group. Alexa tells them that now she is certain that Team Flare was behind Xerneas and Yveltal's attack on Vaniville Town.
Alexa is a passionate and clever journalist. She does not seem to be a Pokémon trainer.
Helioptile is seen at Vaniville Town. In Lumiose City, when Alexa's editor attacks her, he grasps Helioptile by its tail as a threat.
Viola is Alexa's sister. They seem to get along well. They do interviews together, with Alexa asking the questions as Viola does the filming.