Quake: Orbb

Alien Construct: ORBB

The eerily bipedal eyeball, Orbb first entered the battleground between worlds as an uninvolved observer, constructed by the Arena Masters to watch and record the battles. Soon, it surprised its masters (and other combatants) by taking up a weapon and joining the fray. What goes on in the mind behind that glassy lens remains a mystery. The trail of carnage it leaves behind is not.

Notes: adapted as best I could to the arms-and-legs format of the minecraft skin. So it might be more accurate to say this Alien Construct is a new model, as it does not use the skeleton construction of Q3A's Orbb. Still, managed to get a machine gun mounted as the head, and the giant eye into the belly. I think it's as close as I can get within the minecraft constraints.