Ilia is a playable character in Dragalia Lost. She is also the founder of the Ilian Church, the main religion of the game.

Official Description

An alchemist of unparalleled talents, so much so that she was successfully able to create the legendary omega key. After the death of her parents, she was raised by a faerie. She yearns to be free, but the world is greedy for her talents.

Official Description (Dragonyule Ilia)

An alchemist from a thousand years in the past. After learning what a big event her birthday is, she's come to the birthplace of Dragonyule—and though the legends puzzle her, she's set on proving Saint Starfall is real in order to protect the hopes and dreams of children everywhere.