Pokémon Sun and Moon - UB-01 Symbiont

http://www.pokemon-sunmoon.com/en-us/ultra-beasts/

"UB-01’s body is composed of a glass-like substance. However, it’s constantly changing shapes, never settling on one.

While evidence of something like a survival instinct can be observed in UB-01, no one knows whether it has a will of its own or any emotions. It’s said that, for some reason, its movements resemble those of a young girl."

>Constantly changing shapes
>Movements resemble those of a young girl

UB-01 is Lillie confirmed

UB-01, eh?
You know what other Pokémon had a name like that?

ORRE CONFIRMED!