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Lillie is a girl who loves Pokémon but was unable to touch them after moving away to another mansion with her mother and brother after an accident with an ultra beast. Upon her return, she inexplicably was frightened of Pokémon and will either jump away or freeze like a statue though some feel that she is terrified of them. Despite her fears, Lillie loves to leave food out for various Pokémon to eat. Her knowledge of Pokémon is top notch. Lillie was so scared of touching Pokémon that she had to wear a suit to ride Pokémon. Lillie decided to take one step at a time to get over her fear of touching Pokémon. Initially, she was only comfortable with her Alolan Vulpix Snowy, but managed to touch Ash's Pikachu without hesitation later on, and even ride a Stoutland without repercussions. However, after her memories came back regarding Silvally saving her, she was able to touch all Pokémon without being scared.

​She has a keen eye to detail which was shown when she noticed the details in the recording tape of Rotom's and proved Kiawe's innocence. Lillie is rebellious towards her mother Lusamine upon their reunion and like Brock, she also shows her anger and disdain because of her ditzy behavior and also causes a fall out between the two and became annoyed when she keeps doting on her. After rescuing their mother from the Ultra Beasts onward, Lillie grew more confident in herself shown in "Not Caving Under Pressure!" when she teamed up with medium-sized wild Alolan Sandshrew in a Double Battle with Snowy against a wild Tyranitar.

Etymology

The name Lillie originates from "lily" as her white dress resembles the white petals of a lily flower as well as the name following the plant-based naming of characters.

Skills

Lillie using a Z-Move.

Though she had a problem with touching Pokémon at first, Lillie compensates that problem by learning more about them. She shows a lot of knowledge in certain topics. In addition, she also makes quality Pokémon food. Lillie has shown both her Pokémon battling skills and tactics due to watching her friends battle a lot of times. Also, Lillie has shown to be able to use Z-Moves.