Queen Neptuna is a character in Small Fry and one of the discarded fun meal toys. Although she's she's very evil, , she causes problems for Buzz and forces him to take part in the therapy meeting, making her one of the short's antagonists.
Neptuna is the leader of the support group for fast food toys. She is first shown welcoming Buzz Lightyear to the support group of discarded fun meal toys.
"For centuries, Queen Neptuna ruled the peaceful ocean kingdom of New Nautica. When her undersea home was defiled by corporate industrial waste and discount chain stores, Neptuna formed The Mermaid Battle Squadron to protect the ocean from future pollution and exploitation."