Haruka (ハルカ)/Yellow Mask (イエローマスク Ierō Masuku) – 19-years-old, she was raised in a family of ninja, brought up to carry the tradition at the cost of a happy childhood. Forced by her father to abandon all feminine things to focus on her ninja training, she appears tomboyish and is a fierce fighter. She is highly intelligent and loves dancing as she tutors a young girl who is unable to afford dance lessons.
- Weapons: Masky Rotor (マスキーローター Masukī Rōtā).
- Attacks: Yellow Mask Shadow Clone (イエローマスク影分身 Ierō Masuku Kage Bunshin).
- Meditation Gesture: Tou (All fingers together in a fist except ring and pinkie), which signifies harmony with the Universe.
