The Metal Slug Super Vehicle tank was made from an Imaginext Robot Police Tank by Fisher Price. It had lights and blue robot arms but those were removed, filled in with Apoxie Sculpt, and smoothed over. It's easy to unscrew and open up to part out for painting. I created a domed top, scratch-built the side machine guns from abs tubing and Glyos parts, used a Hero Factory chest for the back chassis system. On that system are the exhaust made from Sigma 6 Duke wind-up gun barrels and ML Heroes Reborn Iron Man pipes and random parts for the twin tubes and antenna.
The workin light on top is a Neo Shifters light-up head with a custom case built around it, fodder parts for the roof vent, sculpted 3-hole side vents from Apoxie sculpt, added Spawn Interlink feet jets for the 4 side pegs, and various fodder parts or Modeling Support Goods hobby parts for detail.
Marco and Tarma were made from GI Joes, who I'm not sure because I put them together from loose parts. Unfortunately I've long since forgotten what lower leg goes to who or what arm is what. Their vests were created simply from RoC Cobra Commander jackets and their heads were custom sculpts from Trigate where I resculpted their hair and facial features. A Xevoz boxing glove helped make Tarma's backpack puncher and an Iron Man flame blast/Sigma 6 rocket used for Marco's RAWKIT LAWNCHAIR.
The tank's main cannon blast was a mix of an Avatar Fire nation accessory and ML Centurion Iron Man missile tip. The side cannon blasts are ML War Machine feet blasts.
Basecoat on the tank is Tamiya spray lacquer Lin Grey (it'll take a whole can, about $6) and then hand-detailed with various Testors Model Master Acrylic and Formula p3 paints. The tank makes sounds when you press the button on the main cannon and rolls on hidden wheels.
You can find the Imaginext Robot Police tank most places like Target/Walmart or if you're lucky on sale at Marshalls/TJ Maxx for just $9! It's such a perfect take off of the Metal Slug vehicle I'm absolutely sure the designers at Fisher Price are fans of the series.