Lillie

Lillie is a mysterious girl who assists the professor for personal reasons. She's not fond of making Pokémon fight in battles, but she loves reading and has devoured many books. Lillie was revealed to have taken a Cosmog from her mother, and along with Kukui and Burnet are studying the Cosmog and its secrets.

Lillie loves to shop and read books. When she is traveling with the player character, she is usually exclaiming to do some shopping of her own, and in cities would tell the player character that she got lost and ended up buying outfits in a shop. Lillie is always getting lost, and the player character has to help her. This happens usually because Lillie is trying to avoid Team Skull grunts, as she is not a trainer, and ended up going in the wrong directions trying to get away from them.

Lillie is a young girl with green eyes and platinum blond hair, with two braids at each side of her face. She wears a large white hat, with a blue ribbon around it. Lillie wears a white dress with transparent outlines, a pair of long socks and white shoes resembling ballet flats. She also carries a round bag with a Poké Ball design on both sides. As later revealed, Lusamine made the choice of Lillie's dress for her, likely with the intent of resembling a Nihilego given her obsession with that species of Ultra Beast.