A Japanese actor who was the voice of Doraemon, a cartoon cat robot beloved by children in Japan and other countries has died, her agency said Friday. Nobuyo Oyama was 90.

For a quarter of a century until 2005, Oyama lent her endearingly hoarse voice to the titular blue feline from the 22nd century with his "magic pocket" and its supply of fantastical gadgets, including a door that lets you travel anywhere.

She "passed away on September 29 due to old age", her talent agency told AFP. Her funeral was attended by close relatives, it said.

Nobuyo Oyama in 2007. Photo: AFP

Doraemon is still on air as one of the longest-running Japanese anime series, popular across Asia and farther afield.

While Oyama's successor has played the role for nearly two decades, her voice remains the definitive sound of the robot for many who grew up hearing it.

In Doraemon, the cuddly robot cat with its huge smile travels back in time to help a lazy schoolboy called Nobita overcome the trials of everyday life.

Created by the artist Fujiko F. Fujio, the character first appeared in manga strips in 1969, making the transition to the small and big screen over the following decades.