Akatsutsumi, Momoko also known as her alter ego as Hyper Blossom, who is self-proclaimed leader of the Powerpuff Girls Z and is one of the main characters. She is a middle student of Tokyo city. She originated from the show The Powerpuff Girls and has been adopted by the Japanese animation production, Toei Animation. The original creators of the characters and the show is Craig McCracken. From the The Powerpuff Girls Z, She is represented as a Heart and her weapon is a Yo-yo.

Just as she is in the show, Momoko is a cheerful and a girly type of a young teen. She loves sweets and cute boys and mostly you see her reading a manga. Because she love reading mangas, she mostly known around school as a hero/heroine freak who usually makes references to the Super Sentai series on a normal basis. During school breaks she can be seen using brooms or a duster to "play fight" or act out her favorite scenes.

She has a good sense of humor too when it comes to saving the day. Momoko personality is the same as her alter ego, Blossom, which she always share SOME things with her. Such as the fact both of them are crafty and somewhat manipulative, shown when she could cry on que, unlike Miyako and Kaoru who had to force themselves to cry. But sometimes is silly and usually takes breaks in the middle of a battle with her friends Bubbles and Buttercup.

While she can be childish, unlike the original Blossom. Momoko is also smart like her and does have her brilliant moments. She's also a good fighter and a true friend. And of course she is also afraid of ghosts and green vegetables which she dislike it and prevent sweet. Momoko is also a major sugar junky. She is easily swayed with this, such as being offered cake or cupcakes if she studies an entire evening. However, its clear she seems to be torturing herself with such methods but if it's to get her snacks, she'll do anything to get them!