Marimba is a character first introduced in the movie Doraemon: Nobita's Sky Utopia.
History[]
Her goal is to track down Dr. Ray and defeat him, for the sake of Paradapia. Marimba manages to infiltrate Paradapia, but Doraemon, Nobita and Sonya interferes with her mission, and Marimba is turned into an insect by Nobita. Later, Marimba follows Doraemon and Nobita, and at Hanna's insistence, Doraemon is about to turn Marimba back to normal. Hanna forcibly takes the tool from Doraemon and Marimba transforms into her half-human form. Afterwards, Marimba scolds Doraemon and Nobita for interfering with her mission.