Acid and Electrik harried the Imbara, having quickly realized that the thing couldn't be confused like Shellians or shockbots. Elextrik zapped it twice in succession, but didn't overload its circuits like he would have a shockbot.
The Imbara whipped around to lash out at Electrik; Acid shot it in the rearmost leg with his blaster. He didn't want to use his launcher until Electrik was well out of range. He scurried away from that devilishly quick curved forearm, looking deceptively cumbersome as it slashed by.
Electrik sent a crackling arc of energy at the thing's massive, steel-jawed head. The glowing photoreceptors that served as enhanced eyes snapped to Acid's brother; despite its mass, the Imbara was very quick. Electrik managed to dodge away, out of range of both the robot and Acid.
Acid tried a shot at the eye, but the Imbara dipped its head and the shot spanged off of the protective armor. The robot maeuvered around to face Acid, like a scorpion; Acid already had his launcher ready. As the jaws, like a massive steel trap, descended towards him, he aimed and fired -
The Imbara, intent on decapitating this annoying biological, was istantly aware of the projectile that had been fired at it. It experienced a second of the robotic equivelant of surprise, before its head and segmented neck exploded in a spray of shrapnel, molten metal, and fire.
Acid expected it to deactivate, as so many of the shockbots had done. Instead, the Imbara's now-directionless body proceeded to go into robotic death throes. It flailed and thrashed, and Acid slowly backed away from it. He barely had time to react before one of the hooked forearms lashed out and caught him. Slender Acid was no match for the might of the dying leviathan; he was tossed aside as effortlessly as though he had been but a rag doll, his limp body crashing unresistingly into a wall. Beyond him the struggles of the once-mighty robot steadily weakened, until it lay as still as he.

*Looks for more stupid crap to quote in CT's siggy*