There is no character known as Dinosaur Brother in the anime "Kaiketsu Zorori Mamoru ze! Kyōryū no Tamago". The primary animal characters in this film are the anthropomorphic fox Zorori and his two constant companions, the twin boars Ishishi and Noshishi. One of these twin boars is sometimes mistakenly referred to by viewers using a description like brother, but their species is boar, not dinosaur. The plot of the movie revolves around the trio receiving a letter from a friend who is a dinosaur mother, inviting them to her island to witness her eggs hatching. A typhoon scatters the eggs, and the main characters work to find and return them to safety. Therefore, while dinosaurs and their eggs are central to the story, there is no specific character who is a dinosaur and also a brother. The characters who are brothers in the film are Ishishi and Noshishi, who are twin boars. They are nearly identical in appearance, with brown fur, green shorts, and an orange vest, and they are known for their unwavering loyalty to Zorori, their shared love of sweet foods, and their tendency to engage in mischief. Their background includes having taken an oath not to return to their village until they have become successful villains. In the story, they act as a pair, assisting Zorori in his quest after the typhoon displaces the eggs. They are inseparable and function as a comedic duo, with their simple and childish behavior often leading to humorous situations. Their development across the franchise remains consistent, as they maintain their core traits of loyalty, gluttony, and a penchant for trouble without significant individual evolution. One of their notable recurring abilities is their flatulence, which is used for comedic effect. The true dinosaur characters in the film are the mother and her babies, none of whom are given the name or description of "Dinosaur Brother".