Kuu Kuu Harajuku

The main characters of the series (clockwise): Rudie, Music, G, Love, Angel and Baby.

• G (voiced by Maggie Chretien) is the leader of HJ5. She is trustworthy and level-headed, though sometimes she has her doubts. She's the friendly, honest, and humble one of the band. She keeps the band together, even through their tough times, and is not afraid of any challenge. Her signature colors are aqua, white and black, and she represents bows. She is based on Gwen Stefani.
• Love (voiced by Daisy Masterman) is the smart genius of HJ5. She is intelligent and creative, though sometimes she takes on too much. She has a knack for science, and often comes up with inventions, though some of them backfire. Her signature color is red, and she represents hearts.
• Angel (voiced by Emma Taylor-Isherwood) is the resident fashionista of HJ5. She is bubbly and cheerful, though sometimes she can be a bit of an airhead. She loves fashions and trends, as well as cheering up others. Despite her cheerfulness, she can be very jumpy at some point. Her signature colors are yellow and blue, and she represents stars.
• Music (voiced by Sally Taylor-Isherwood) The second-in-command and active tomboy who is the lancer of HJ5. She is sarcastic, genuine, and strong-willed, though at times she gets easily annoyed. She is a sassy and fierce force of the band, as well as an exceptional fighter and dancer. Music can be somewhat grumpy at times. Her signature color is purple, and she represents musical notes.
• Baby (voiced by Charlotte Nicdao) The sweetest girly-girl who is the big guy of HJ5. She is loving and carefree, though sometimes this gets her in trouble. She adores everything that she thinks is cute, and also loves to give hugs. Her signature color is pink, and she represents cuteness.
• Rudie (voiced by Danny Smith) is the enthusiastic manager of HJ5. He works hard to book them gigs; although his bad luck tends to get him and the band in trouble, he deeply cares about their safety. He is associated with checkered-themed colors, most notably in white, black and gray.

• General No–Fun – the short, serious and notorious leader of Nofunland.
• Commander Bo-Ring – General NoFun's chief assistant and a high-ranking official in Nofunland.
• Colonel Spyke – captain of the Harajuku Defense Squad who dislikes HJ5's music.
• Say-Wah – an obsessed HJ5 fan with an auto-tuned voice.
• Madame Shhh – a woman who wishes to rid the world of music so that she can live in peace.
• Sammy Starr – a music manager and Rudie's rival.
• Moods Meow – a cat that was owned by the main antagonist, General No–Fun.
• Stegosaurus Stan – an old children's show host who then wants to win back glory and revert everybody (including HJ5) back into toddlers.
• Teen Genie – A rude teenaged genie who wants to use the phrase "whatever".

• R.O.D. – HJ5's robotic personal assistant who speaks with a British accent.
• Chewy – HJ5's pet Pomeranian. He is based on Gwen Stefani's pet of the same name. He was originally owned by G.
• Jimmy – Rudie's nephew and an aspiring photographer.
• Twisty – a music producer and millionaire. He loves to wear sneakers.
• Mauve Madison – a popular talk show host and TV personality. She loves the color mauve (hence her name).
• Zookeeper Smythe – A zookeeper that works at the zoo.
• Sparkski – A hero virus who helps the HJ5 with the band's problems.
• Morgan and Macy – A couple of twins that were managed by Sammy Starr.
• Brodie – Rudie's younger cousin who works as an intern for the band.

Kuu Kuu Harajuku first premiered on 10 Peach (formerly known as Eleven) in Australia on November 1, 2015,[16] and later premiered on ABC Me on December 6, 2016,[17] and on Nick in the US on October 3.[18] Later, it was moved to Nick Jr. on February 3, 2017.[19] The series also premiered on Family Channel in Canada on November 1, 2016.[20] On May 4, 2017, the series aired on Sony Television's Pop with the channel's first release in Italy. The series returned to U.S. streaming on the free live TV application Pluto TV.[21]

In February 2017, Shout! Factory signed a deal with DHX Media to secure the North American DVD and Blu-ray rights to Kuu Kuu Harajuku.[22]

Emily Ashby of Common Sense Media gave Kuu Kuu Harajuku a mixed review upon its U.S. debut. She praised Love and G as positive role models, stating, "Love stands out for her can-do attitude and her bevy of ideas to solve all kinds of problems, and G is known for her coolness under pressure." In summary, however, Ashby called the cartoon "pretty mindless, and there are better choices for role models for this age group, but it's entertaining nonetheless."[26]

Erica Russell of PopCrush argued that Kuu Kuu Harajuku's setting "is not Japan, but a culturally-empty, messily regurgitated Westernization of it. It's a whitewashed 'kawaii' fairy tale."[27] Rae Alexandra of KQED criticized the decision to portray the Harajuku Girls as racially ambiguous, suggesting that "it seems Stefani (or network executives) thought the best way to deal with the overt cultural appropriation was simply 'let's not have them be Asian anymore.'"[28] Likewise, Teresa Jusino of Dan Abrams' The Mary Sue called negative attention to the characters' races, writing, "I notice that the Harajuku Girls are all different colors. Points for diversity, I guess, except that it seems that they appropriated Japanese culture only to just about erase it from this series."[29]