Hibiki is one of the personalities of Motoko Gettou. She is represented by the color red (attack).

An aggressive tomboy who is particularly skilled in karate. She is always looking for or instigating fights. She is also the most protective of Motoko. However, she is also the one that is more determine to get Kouskegawa to take the head-on aproach to admit his feelings to Motoko, going so far as to kiss him and change back into Motoko so he would finally kiss her. Out of the three personalities, she is the most common to appear.

Trained by Tatsuya Rukawa, Hibiki is the red (attack) martial artist of Motoko's HiFuMi personalities and the most battle hungry, sporting a noticeable killing aura as seen by Moegi and Anzu.

Red: A color that represents the preferred use of attack (kou) in martial arts.