Rich Man, Poor Man (1976)

S19E13 PeTerminator

Stewie creates a "Terminator" robot version of Peter with the intention of eliminating Lois for attempting to make him eat broccoli. However, when the situation spirals out of control, Stewie and Brian find themselves on a high-stakes mission reminiscent of the classic film to rescue Stewie's life from the chaos they’ve unleashed.