1970 – 7ft-tall “Blue” Robot – Jiro Aizawa/Osamu Tezuka (Japanese)

The 7ft tall, blue robot appeared in the Fujipan pavillion at Expo'70, Osaka, Japan.  The robot display for the Fujipan pavillion was designed by Jiro's partner Osamu Tezuka (the creator of Astro Boy) so most likely the robot was, at least, from their Institute of Juvenile Culture. The robot itself is probably an Aizawa robot.  

A display of robot models showing which robots were included by Tezuka in the Fujipan pavillion.

See the full Jiro Aizawa story here .