Emma appears solely in the episode "The Investigation," operating under the alias Essentia while wearing an advanced technological suit called the Expansion Suit. During the episode, Essentia steals three Furfrou in Lumiose City from a Pokémon Trainer she has defeated. Looker confronts her during the theft. Emma's companion, the Espurr Mimi, recognizes Essentia despite the suit, revealing to Looker that Essentia is Emma. Looker and Mimi pursue Essentia to Lysandre Café. In the ensuing confrontation, Mimi attacks Essentia, specifically targeting the Expansion Suit. This attack destroys the suit's helmet, disrupting its mind control influence and freeing Emma.