This is going to get a bit technical but I pick a Imperial Knight and Imperial Knight. In Warhammer 40k there is a faction called Knight houses. Now Knights are not strictly robots, but they are independent of they user of the Knight. Think Titanfall Titans but not as straightforward. Now All knights have something called the Machine spirt. This is consider either as the on board A.I. or an actual spirt inhabiting the machine. Like most things in Warhammer 40k it’s vague for a purpose. The one who uses the night is called a princeps, who directly links into the machine and the Machine spirit. If the Pilot is able to interface properly, they will be in full control of the Knight as a devastating war-machine. When the pilot dies in battle the machine goes on a murderous rampage, and is difficult to stop. Knights are also know while idle to sway back in forth almost as if it’s dreaming.