Ezelith is a playable character in Dragalia Lost.

Official Description

A young prodigy—as she'll be happy to tell you—who excels in the use of both weapons and mana. Reckless and rather troublesome, her cockiness is rivaled only by her actual skill.

Official Description (Valentine's Ezelith)

Even the Halidom's resident genius has to dress up for a cute event like Valentine's. Though she's still as snarky and confident as ever, the spirit of the event has caused feelings of gratefulness and love to take hold within her as well.