Theory is Blade that grant tremendous power to her Driver. She uses the ice element, wields a Chroma Katana, and acts as a Tank in battle. She moves as a skater on ice with an elegance reminiscent of a fairy.
Xenoblade Chronicles 2
Xenoblade Chronicles 2 takes place in Alrest, a world covered in a sea of clouds. Humans live on top of and inside living creatures known as Titans, together with Blades, powerful beings that can be summoned by certain humans named Drivers, and to whom they are tied for the rest of the Driver's life.
