Fun Meal Buzz is first seen in the display case with Fun Meal Emperor Zurg, talking about being played with, but Fun Meal Zurg chooses to rather stay in the case. Spotting Bonnie's Buzz Lightyear toy in her backpack as she is entering the restaurant's ball pit, Fun Meal Buzz then exits the case, ambushes his larger counterpart and replaces him with himself in the ball pit. Bonnie takes Fun Meal Buzz and Rex home. When they get Bonnie's room, Fun Meal Buzz gets Rex to convince Bonnie's toys that the plastic in the ball pit has made him shrink, but the toys know this is not the real Buzz (except a gullible Rex). As Fun Meal Buzz skates around the room, eagerly awaiting playtime, Woody tries talking to him but the little toy snatches his hat and slaps Hamm in the rear before he is tackled. The toys then tie Fun Meal Buzz to a glue bottle and devise a plan to rescue the real Buzz, who suddenly shows up in Bonnie's room, having managed to escape Poultry Palace. Afterwards, the real Buzz takes his smaller counterpart back to the restaurant, where Mini-Buzz joins the support group for Discarded Fun Meal toys with Bonnie's Buzz as his "sponsor."
- Fun Meal Buzz Lightyear is the fourth main Toy Story antagonist to be a toy, after Stinky Pete, the main antagonist of Toy Story 2; Emperor Zurg, the tertiary antagonist of Toy Story 2 and the main antagonist of Buzz Lightyear of Star Command and its movie; and Lots-o'-Huggin' Bear, the main antagonist of Toy Story 3.
- He is also the first Buzz Lightyear incarnation to be fully aware from the start that he is in fact a toy. All other Buzz incarnations usually believe themselves to truly be space rangers instead of simply toys at first.
- He is also the second Buzz incarnation to replace Andy's and later Bonnie's Buzz Lightyear at one point (the first being Utility Belt Buzz).
- Woody estimated Fun Meal Buzz Lightyear to be about three inches tall.