While Rex finally feels excited about finally overcoming his frustration toward not being able to defeat Zurg previously, the "alternate" Buzz feels forlorn about losing his father. As Zurg sets his gun to his highest level and is about to finish the "alternate" Buzz off (at point-blank range), Rex, not bearing to watch the duel anymore, turns his back, but his large thick tail hits Zurg, knocking him off balance and falling down the elevator shaft to his supposed death. During this battle, after overpowering the other Buzz, Zurg reveals he is Buzz Lightyear's father (a parody of the duel between Darth Vader and Luke Skywalker from Star Wars Episode V: The Empire Strikes Back) and same as Optimus Prime and Megatron. A showdown occurs between the "alternate" Buzz and Zurg atop an elevator, where Zurg uses his chief weapon (which appears to be a Nerf ball gun).
Both the "alternate" Buzz and Rex, a fan of the video game "Buzz Lightyear: Attack on Zurg", are caught with surprise by Zurg's unexpected arrival. Along with the group is an "alternate" Buzz Lightyear action figure (also released from Al's Toy Barn by Andy's Buzz Lightyear), who also believes himself to be real.
He seems to have followed Andy's Buzz across the street, through an air vent of Al's apartment, and up the elevator shaft as he is seen arriving atop the elevator when Andy's Buzz and his rescue squad of toys head back to the elevator after Al packs Woody and the Roundup gang into his case and leaves his room to head for the airport. Believing himself to be real much like Andy's Buzz has done in the first film, he pursues after Andy's Buzz to destroy him. Much later in the film, a Zurg toy action figure is accidentally released by Andy's Buzz Lightyear in Al's Toy Barn. A little later, he is seen doing battle with Buzz, in which Zurg, using his ion blaster, blasts the top half of Buzz's body into smithereens however, the opening sequence is revealed to be only Buzz Lightyear: Attack on Zurg, a video game Rex is playing. The first form appears during the opening sequence, where he is initially seen tracking Buzz's location through his fortress inside his control room. Zurg appears in two forms in Toy Story 2. 1.4 Buzz Lightyear of Star Command Star Command.1.3 Buzz Lightyear of Star Command: The Adventure Begins.