Rudy is the main antagonist of Ice Age: Dawn of the Dinosaurs.
Rudy is a huge white Baryonyx-like dinosaur who dominates the dangers of the underground dinosaur world. His pursuit of Buck and the other animals provides the film’s central physical threat as the group searches for Sid and tries to escape.
The name can be confused with other Ice Age villains. Gutt is the pirate captain from Continental Drift, while Soto is the saber-toothed tiger leader from the first Ice Age. Buck is not an antagonist; he is an ally who knows the dinosaur world and helps the group.
Rudy’s scale and pale appearance make him visually distinctive within the franchise. The film uses him as a dramatic counterpoint to Buck’s smaller, energetic heroism and to the comedy of the returning herd.