Namco made a handful of bots for the Japanese Science Foundation Museum, including "Largo" the stamp robot. Kids would press Largo's red nose and the robot would then stamp their museum pass.
Another one of Namco's robots was Atoma, "The Atomic Robot", which was apparently able to "talk" to visitors via pre-recorded phrases.
In 1985, when Tsukuba, Japan, played host to the World Expo, Namco created a robot called Cosmo Hoshimaru. It was pink!
Many of Namco's robots were very basic, even crude, by today's standards. However, Namco did have a feminine receptionist robot Namco made for its headquarters. This was long before Japanese robotics companies became producing them around the turn of the century.
The receptionist bot is apparently still located at Namco's offices. It also appeared in the Namco Museum games for the PlayStation.
But in the decades before Namco began making video games, the company started out making coin-operated kiddy rides during the 1950s and 1960s. These rides were located on top of Japanese department stores and are similar to the coin-operated attractions found in front of North American supermarkets.