Final answer:
Bunraku is a traditional Japanese puppet theatre where each puppet is operated by three puppeteers, known as ningyotsukai, which include the omozukai, hidarizukai, and ashizukai.
Step-by-step explanation:
The type of Japanese theatre that utilized puppets, each operated by 3 people, is known as Bunraku. In Bunraku, the puppeteers (ningyotsukai) work in concert to bring the intricate puppets to life. The master puppeteer (omozukai) controls the head and right hand, while the second puppeteer (hidarizukai) operates the left hand, and the third puppeteer (ashizukai) manipulates the lower half. This traditional art form is notable for the visible presence of the puppeteers on stage, with the master puppeteer's face visible and the others cloaked in black.