Kalach-Cha's construct

The Construct is a non-player character and companion in Neverwinter Nights 2.

""An animated suit of thick metal and armor, this blade golem is a fearsome automaton bound to its controller’s will. Its right arm is a blade as long as a grown human. The armored plates of this golem have a metallic blue sheen and the styling of the armor is unlike the fashion of armor found in the Sword Coast. Standing well over eight feet tall, this metal giant moves with remarkable speed and grace despite its mass.""

Background
The Construct is first encountered in Act I, during the attack on the githyanki safe house in Neverwinter. Originally an Illefarn design, it was either reactivated or built by Black Garius during his abortive attempt to seize the power of the King of Shadows. The Construct erupted from a portal and attacked both the gith and the Kalach-cha. After suffering heavy damage it retreated through the portal.

It later appeared, inactive, in the githyanki lair in the mountains northeast of Neverwinter. Grobnar Gnomehands took it upon himself to reactivate it. Shortly before the Construct was reactivated, Bishop managed to trick Grobnar into giving him the override code for the Construct.

The final fate of the Construct is determined by the PC's influence with Bishop and Grobnar. If the PC has high influence with Bishop, the Construct remains under Grobnar's control. If the PC has low influence with Bishop and low influence with Grobnar, Bishop gains control of the Construct with the override commands and uses it to fight against the PC. If the PC has low influence with Bishop but high influence with Grobnar, Bishop will initially succeed in gaining control of the Construct but Grobnar will reveal that he has another set of override commands which grant the Construct free will. The Construct then decides to side with Grobnar and the PC against Bishop and Black Garius. It is assumed to be missing along with the PC and Grobnar after the defeat of the King of Shadows. According to Ammon Jerro in Mask of the Betrayer, Grobnar dove on top of the Construct in an attempt to protect it from the King of Shadows' collapsing lair.