Emperor Zurg
Emperor Zurg is the warlord of vast interstellar empire and the archenemy of the heroic Buzz Lightyear. Mentioned only by name in the first Disney/Pixar film, Toy Story, he appears in person as the tertiary antagonist in the sequel Toy Story 2. He is a major player in all three of the primary villain tournaments.
His CGI form appears briefly in the Disney vs. Non-Disney Villains war before being switched out for his animated counterpart.
Disney vs Non Disney Villains
At War with Gallaxhar
Zurg and Gallaxhar are established as enemies prior to the outbreak of the villains war. At this point in the conflict, Gallaxhar generates a massive clone army. The clones overwhelm Zurg's drones. Zurg, angered by his army's failure, attacks Gallaxhar's flagship himself. His blaster cannon far outclasses Gallaxhar's pistol, and he disarms his adversary. Zurg then tampers with some of Gallaxhar's machinery, creating a wormhole in the CGI universe. This overload leads the entire ship to explode and Gallaxhar to be vaporized. Zurg, however, is sucked through the wormhole, appearing in the animated universe.
For more of Zurg's Disney vs Non Disney Villains story arc, see here.