John is a human passenger aboard the Axiom.
While about his usual business around the Axiom, John presumed that WALL•E was a waiter bot to take away his drink. Unfortunately, WALL•E accidentally made him fall over and steward bots told him to wait for assistance. WALL•E helped him before following the cart carrying EVE.
While at the windows, John noticed WALL•E space dancing with EVE. The other human next to him, Mary, also met the robot. Upon seeing each other, they quickly fall in love. They playfully splash in the pool, against the objections of a robotic life guard.
When AUTO tipped the ship over, John and Mary saved a bunch of babies.