Hagane Miku is a derivative of Hatsune Miku, and thus she has many similarities with her in appearance. She is notable more pale than Hatsune however.
- Hair is silver, with dark ribbons and headphones similar to Hatsune
- Eyes are blue eyes that have red pupils.
- On her left arm is a tattoo, a jagged '01'
- She wears wears a black and blue leather outfit. Basically a heavy metal version of what Hatsune wears. With the addition of a bullet belt.