Can someone ID this robot?

I saw this broken lot on the bay and want to know who the orange, blue and yellow robot was in the bottom right. I had one when I was a kid and I have been looking for another one, but don't know his name. You could press a button on his belt/waist and his chest would open and could fire missiles. He was plastic and vinyl construction and I got him in a box lot at an auction so I'd shut up and let mom bid on her antiques. I <3 him.

It's a bootleg of the Bullmark Meka Machine Combined Diapolon vinyl.

Ahhhh, I was thinking it was a boot. It looked very close to the style of Diapolon, but never saw one in galleries of Diapolon toys. Thanks! I guess they must float around somewhere as this one popped up. Too bad the button was fubar.