Nolan Bushnell and a company called Axlon made one of the most interesting toys ever made "The AG Bear" in 1985. ( AG stands for Almost Grown ). AG Bear is equipped with a voicebox which, although originally intended to mimic the intonation of the human voice or other louder sounds, transcended all expectations when children discovered that AG could respond with a spontaneous voice.
Axlon Bear Robot - Click To Enlarge
Source: Jonathan Painter Collection - Updated 11-04-2010