Nia is a key character in Xenoblade Chronicles 2, serving as a main party member and initially appearing as a mysterious and sassy healer. With her Welsh accent and unique personality, she provides both comic relief and emotional depth to the story. Nia is a Blade, a living weapon who can transform into different forms to assist her Driver, Rex, in battle. Her journey reveals surprising truths about her past and her true identity, which plays a crucial role in shaping the narrative.