Pete, along with his brother Tom go out to eat with Jim and Pam, and try to prank Jim by teasing Pam about being an artist. They later text Jim "Pam's okay. Welcome to the family" and both Jim and Pam seem pleased by the brothers' acceptance of her into their family.
Both he and Tom appear at Jim and Pam's wedding with their wives. He, Michael, and Dwight all hijack Jim and Pam's wedding by starting the "JK Wedding Entrance Dance."