Japanese media reports (article translated by r/dbz) that Hiromi Tsuru, who played Bulma in the long-running Dragon Ball franchise, was found unconscious inside her vehicle on Nov. 16 at 7:30pm in Tokyo. Police have taken her to the hospital where she was pronounced dead. Police did not suspect any signs of an accident and theorize that it may be due to an illness. She was 57 years old.
Besides playing Bulma in Dragon Ball, she also played Madoka Ayukawa in Kimagure Orange Road, Ukyo Kuonji in Ranma 1/2, and Naomi Hunter in Metal Gear Solid. Tsuru reprises her role as Bulma in the ongoing Dragon Ball Super anime series.