Allies Of Powerpuff Girls Z

Professor Utonium 

Professor Utonium has a son named Ken Kitazawa, who is responsible for all those affected by the Chemical Z lights, especially the Powerpuff Girls Z. Professor Utonium was originally experimenting with the substance Chemical X and strove to find a way to change its chemical properties. Professor Utonium has created several inventions throughout the series; the most important one being his Chemical Z Particle Ray, which allows him to transform those affected by the lights back to normal. He seems to be aware of the effect Ken's lack of a mother has had on his son, assuming that it had caused him to be a bully to the girls. However, this does not change his behavior towards Ken. He appears to be a gentle father figure. He treats the girls like members of his family and is very close to the Mayor and Miss Bellum. While he is very gentle and serious, Professor Utonium may, at times, act a little less mature than he usually does.

Ken Kitazawa 

Professor Utonium's eight-year-old son who is somewhat responsible for turning regular girls into the Powerpuff Girls Z and numerous other characters into villains using Chemical Z. He used it to blast a glacier in order to set the weather back to normal, but the impact resulted in the explosion of several lights, which affected all those who came in contact with it. Despite being younger than the girls, he acts a lot more mature and the education he receives from his father is considered more advanced than what the girls learn in their school, earning his PhD at an early age. Ken attended school in order to gain social skills and make friends. While he considers grade school life boring, he has made several friends, including Jou, who was originally his rival and Kuriko who is Momoko's young sister. Ken sees the girls as older sisters and has to often put up with them, though he still cares for them deeply. Ken interchanges between calling Professor Utonium Dad and Professor. it is also revealed that Ken's mother works on a space station, therefore making her very busy and unable to be with Ken. Thanks to the girls and Santa Claus, he was able to see her and is now able to communicate with her clearly on the lab's monitor.

Peach 

Peach is Ken's pet robot dog who was also affected by a white Chemical Z ray, gaining the ability to talk, as well as a considerable boost in intelligence. Peach's shout prompts the girls to transform either in person or through a long-distance communication device, although a modification to the girls' compacts allows them to transform on their own. Additionally, Peach can re-summon the girls' powers, even when their powers are drained. Peach is also capable of sniffing out those who are affected by the black rays, white rays, and Him's black particles. The villains that have been sniffed by Peach are stored in his data banks for later reference. This ability, however, is hindered if his target is wearing heavy cosmetics. Peach is also capable of sniffing and identifying others more clearly than other dogs, even when someone's appearance has been completely changed.

Mayor Mayer 

The mayor of New Townsville (Tokyo City). While less extreme in comparison to the Mayor of Townsville, the Mayor is very childish and has a very short attention span. He seems to worry quite a lot when the girls are fighting, and wishes that they could cause a little less damage. The Mayor, like many of the characters in the anime, loves sweets. The Mayor also has a younger brother, who is the Principal of the school. It was through him that Miss Bellum and the Mayor were able rearrange the classes, so that the girls would be in the same class. However, the Mayor and the Principal, don't always get along, and even the most minor of things will set off an argument, which often time leads to name calling. He also deals with his brother when the girls aren't doing well in class due to them skipping class to save the city.

Sara Bellum 

Mayor Mayer's assistant, who has blonde hair compared to the original's red hair. Usually, Sara Bellum covers her face with a tablet computer, which has lipstick imprinted on it. Sara Bellum in the anime still does most of the mayor's work for him in a manner similar to the original Sara Bellum, and still appears to be the brains of the operation. It is noted several times in the series that she is very attractive, including Fuzzy Lumpkins developing a crush on her.

Kuriko Akatsutsumi 

Momoko's eight-year-old sister, and she is just as hyper and addicted to the sentai/hero genre as her older sister. She is very independent and likes to pretend she is a heroine. She admires the Powerpuff Girls Z and wishes to be a heroine just like them. She admires Rolling Bubbles and Powered Buttercup, but shows little favor for Hyper Blossom who, unbeknownst to her, is actually her own sister. She is also always looking for new ways to annoy her sister. She appears to be quite interested in Ken, especially when she realizes that he knows her sister. Similarly, Ken seems interested in her because of her resemblance to Blossom.

Great Edo Chaki Chaki Girls 

Three girls, Momo, Omiya and Okou, who protected Edo from Him, Edo eventually became Tokyo City. A long time ago in Edo, when Him was terrorizing its citizens, a man named Kennai Hiraga, created the special substance Chemical X. Hiraga poured it on three girls: Momo, Omiya, and Okou. The substance changed their appearance, giving them new hairstyles, now similar to their present day counterparts and kimonos which the bottom portion is shorter than normal, resembling mini skirts, the colors match the Powerpuff Girls Z, and their sashes are black with the symbols of the Powerpuff Girls Z, as well as their own powers and weapons. The three faced and successfully defeated Him, whose weakness to the cold became his undoing. Together with Hiraga, they were able to drain Him's powers and seal his body in a coffin. The Great Edo ChakiChaki Girls can be seen as the heroines who preceded the present day Powerpuff Girls Z and may in fact be their ancestors. Because of his defeat, Him has a deep hatred towards the Great Edo Chaki Chaki Girls and directs that hatred towards the Powerpuff Girls Z for their resemblance to them.

Kiyoko Gotokuji
Miyako' grandmother, who she lives with in a large traditional-looking house. She is gentle sounding and usually gets distracted by nostalgic things, but she can also be strict when it comes to manners. You also never see her eyes ever open, as they are always closed to portray a happy feeling. She is a traditional Japanese woman.

Tokio Matsubara
Kaoru's father, a professional wrestler and loving family man who is never seen without his mask. He left for Mexico when Kaoru was young, and studied the art of the luchador after experiencing a losing streak that could have cost him his career. His teacher was severely injured in what is implied to be his final match. The Masked Mexico was given his teacher's mask, which in true lucha spirit, he never removes, except when taking a shower. Since then, Kaoru has forgotten what her father's face looks like. There is no photograph in their family album that shows what his real face looks like either, mirroring Miss Bellum's running gag. After he wins the match against Giant Panda Mask, Kaoru finally got to see her father's face for the first time since before he left for Mexico, which is reportedly very handsome.

Miss Keane
The girls' teacher who is very pretty and loved by her male students, although the female students don't like her as much, especially Princess Morbucks. Miss Keane is kind and incredibly patient. Mojo Jojo gets a crush on her and tries very much to win her attention. When the girls' every attempt gets thwarted by Miss Keane not letting them go to the nurse so they don't miss class time, they try telling Miss Keane that they are the PPGZ, but she does not believe them, telling them to go to the nurse because there's something wrong with their heads.