What is Sid's surname in the original Toy Story?

Sid’s surname in the original Toy Story is Phillips.

Sid Phillips is Andy’s next-door neighbor and the film’s main human antagonist. He enjoys taking toys apart and rebuilding them into strange creations, which makes him a major threat to Andy’s toys after Woody and Buzz land in his room.

The name Phillips is associated with Sid through the film’s setting and official character information. His younger sister is Hannah, whose toys are also affected by his destructive experiments. Sid’s actions create some of the film’s most memorable visual moments, including the hybrid toys assembled from mismatched parts.

Sid is not presented as a supernatural villain. He does not know that toys are alive, and his behavior comes from ordinary childhood experimentation taken to an extreme. At the end of the film, Woody and Buzz frighten him by revealing their movement, causing him to abandon his destructive treatment of toys. Sid later appears briefly in another role in the Toy Story universe.