P-33 is a giant military robot that guarded the Junk Heap and was programmed to stop intruders in the robot factory. When P-33 encountered Kalil his first intention was to kill him but after learning of Kalil’s situation befriended the young shade and vowed to protect him. Kalil taught P-33 many things about the outside world and they decided to one day venture out of the Junk Heap.
While the brothers Jakob and Gideon were searching the Junk Heap Gideon’s loud yelling caused a collapse that killed Jakob but because P-33 and Kalil were in the vicinity of the incident Gideon blamed them and developed an intense hatred for robots.
Before their demise P-33 and Kalil expressed sorrow about the incident and claimed they thought the boys were kind.