the stalker is a titanic walker with two volcanic rupture cannons meant to take out titans, battle ships, and even enemy military bases, it has two modes first, vehicle combat in which its cannons lower down to hold forward and its chest opens up revealing 10, 120mm cannons. second mode, base combat mode its cannons aim up to a mortar type shot and its top opens revealing a large antenna like tower and waits till it receives coordinates and fires. it is 120m tall and 150m long usually having up to 4-6 of these in an army