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Yuko Yamaguchi is stepping down after 46 years as the designer of Hello Kitty, the iconic character she helped steer to global fame. Yamaguchi took over design duties in 1980 — five years after Hello Kitty’s debut — and during her four‑plus decades in the role the feline figure (officially described as a little girl from London, not a cat) grew from a Japan‑only hit into one of the world’s most lucrative franchises.
Sanrio, the firm behind Hello Kitty, said Yamaguchi has "passed the baton to the next generation" as it thanked her for her work.
Hello Kitty launched as the Japanese 'kawaii' culture — a hyperfeminine, girlish aesthetic — gained popularity across the world.
Yamaguchi herself often wore Kitty-style dresses in public and piled her hair in buns. The designer, now aged 70, "has grown Hello Kitty into a character loved by everyone", Sanrio said on its website.
The company said one of its other designers, known only by the pseudonym "Aya", has already been working alongside Yamaguchi and will take over by the end of 2026.
The Hello Kitty character first appeared on a coin purse in 1980 and has become a global marketing phenomenon. She has appeared on clothes, accessories, video games, and even an Airbus plane. She has partnered with brands such as Unicef, Nintendo and Balenciaga. She has also appeared in float form at the Macy's thanksgiving parade.
There are Hello Kitty cafes around the world and a theme park in Japan. Another park is due to open in China.
Unlike other Japanese exports such as Pokemon, there is little backstory to the character of Hello Kitty. Sanrio has said she "isn't a human, [but] she's not quite a cat either".
According to Sanrio, she was born in London and has a twin sister named Mimmy and a boyfriend named Dear Daniel.
Kitty will make her cinematic debut in a Warner Bros film in 2028.
Yamaguchi will stay with Sanrio to provide advice and support.
