Spider-Tron (Earth-1600)

Spider-Tron was a prototype Spider-Slayer created by Alistair Smythe to kill Spider-Man in revenge for his father's death. He was designed as a new generation of human-like Spider-Slayers, but was accidently programmed by Spider-Man with a concience based on his brain patterns. Spider-Tron rebelled and helped Spider-Man defeat Smythe, gaining a great sense of humanity and responsibility, and eventually became a S.H.I.E.L.D. agent while being upgraded with a weaponized body.