Xerosic is one of five Team Flare scientists in Pokémon X and Y. Xerosic is one of five scientists that are the driving force behind Team Flare. He is the only male Team Flare Scientist and has red goggles. He is first encountered in the basements of Lysandre Labs. After battling the player deep in the hideout, he offers them a chance to stop the ultimate weapon by choosing one of two buttons, as one will turn off the device and the other will activate it. However, despite both his offer and Lysandre's promise, he activates the weapon regardless of the player's choice, bragging that it is a victory for Team Flare's science. After the downfall of Team Flare, Xerosic goes into hiding and begins conducting a project on his own, attracting Looker's attention. He sets up a lab in a secret floor of the Lysandre Labs complex and posts a notice in Lysandre Café looking for part-time employees, hiring the Lumiose Gang for security and Emma as his test subject. He creates a device called the "Expansion Suit", which can augment a human subject in a number of ways, including giving them superhuman reflexes, shapeshifting powers and the ability to hack and control Poké Balls. After teaching Emma how to be a Trainer and loaning her his Pokémon, Xerosic advances his experiment to the next stage, in which he remote-controls the suit while Emma sleeps inside, unaware of what she is actually doing. This figure, dubbed "Essentia," goes on a crime spree throughout Lumiose City using personalities and disguises based on various Trainer classes pre-loaded into the Expansion Suit's databanks. The player and Looker ultimately unmask Essentia as Emma and discover Xerosic's secret laboratory, at which point he sets his creation on them in repeated battles. Eventually, however, Looker's dedication to Emma's well-being moves Xerosic enough to make him have a change of heart, and he frees Emma from his control. Realizing that while his creation of the Expansion Suit was a success, his plans are finished, and Xerosic surrenders to Looker and is taken away for trial. Before leaving, however, he donates all of his Pokémon and the Expansion Suit to Emma, having deactivated the remote-control function of the suit, asking her to use them to protect the peace of Lumiose City.