This a custom Cobra Boomslang anti tank robot that I made back in the mid to late 90's out of a Toybiz Nimrod.
This is one of about 25 that I made. This one was turning out poorly, so I flung it into a bin of junk parts where it spent the last two decades, until I came across the bin recently. I was pretty happy to discover I still had this one because I sold all of the others together along with the Cobra Terror Drome that I had created them to defend. This one is very sloppy, and was probably being made while I was slightly inebriated (I was inebriated often back then so its a very high probability) and is unfinished but its still neat to see.