Robot Peter is a robot character that appeared in "Fore Father". It was made in Peter Griffin's likeness.
In the episode, Peter says Cleveland Brown, Jr.'s win will be his greatest victory ever except for the time he defeated his robotic twin. It was revealed that his wife Lois had to kill one of them when she couldn't tell them apart. Lois and the remaining Peter then hugged and Peter's face fell open to show a robot face, revealing that Robot Peter was the Peter Lois didn't kill.