"Dex-1000 was once a filing droid in the Metallic City. He now spends most of his time gathering data by erratically firing his new weapons with little regards for safety. When he's not piecing himself back together after an experiment, he is making a digital index of everything around him.
This filing droid once worked at the great library, but accidentally stumbled into the exploration pod while scanning some books. He soon found himself flying high above the earth, rocketing away from the city. This was quite a curious predicament. Dex could only watch from the window as the actual exploration bot waved happily from the ground. Dex blankly waved back.
He knew that he would not be allowed back into the city until he had collected and digitally indexed every specimen within his landing zone. With nothing but his latest prototype blaster to defend himself with, he exited the pod and headed into the world. He would begin at index 0."