Who is this Robot?

Ever since the local Starbucks added Legos to their game selection, my kids have been Lego crazy. Luckily, I still have my Legos from years ago. I have two large bags filled with snap-together-plastic-goodness. The boys dug into the these bags like Augustus Gloop in a chocolate river. Found among the bazillion blocks, was this robot. I remember playing with him, but I don’t remember if he came from a movie, or a comic book, or somthing else. He’s obviously not a Transformer or a Star Wars character, so who is he? The only English markings are “Made in Japan” on his back. There are some Japanse markings on his feet.

Can anyone help me out? Who is this Mr. Roboto?

Domo Arigato. 

Joey's Roboto