Ice Age Wiki

Rudy glares down at Buck

Rudy is a Baryonyx that lived in an underground world during the Ice Ages. He makes his appearance in Ice Age: Dawn of the Dinosaurs where he is the main antagonist.

Background Story

When Buck, a weasel, had fallen into the dinosaur world, a gigantic albino Baryonyx came out of the shadowy jungles to attack Buck, and succeeded in severely damaging Buck's eye. To escape the dinosaur, Buck climbed a tree that reached a massive height above the clouds of the dinosaur world, but Rudy managed to catch Buck and swallowed him whole. Before Buck was in the dinosaur's stomach, he managed to claw his way out of Rudy's throat, holding onto his uvula, and projecting himself out of Rudy's jaws, knocking out one of Rudy's teeth as he did. Buck used the tooth as a weapon from there on, and Rudy recurred in Buck's dreams and thoughts continuously. Rudy has been shown to have held a grudge on Buck for taking his tooth, in fact he greatly despises Buck.

Rudy had managed to track down the herd of mammals that had come into the dinosaur world, and tried to eat them all, but was thwarted by Buck, who fended him off before tying him down to the ground. Rudy broke loose and almost attacked the herd before he was stopped by Momma, a female Tyrannosaurus Rex, who pushed him away until he fell off a nearby cliff. Buck was distraught at the disappearance of Rudy, but accepted it and left the dinosaur world with the herd before he heard a familiar roar: Rudy had survived. Buck returned to the dinosaur world at once and spent his time happily fighting off Rudy from that point on. Buck was, from that point forward, often seen fighting Rudy in any number of ways, including riding his back much to Rudy's chagrin.

Curiously, despite the grudge he holds against Rudy, Buck appears to hold a respect for him, such as saying goodbye after putting temporarily throwing away the tooth. Surprisingly the only two in the Dinosaur Valley that does not fear Rudy is Buck and Momma. It is possible that Rudy has or once had a mate, although this is never shown. It is also possible that he is the last of his kind, or his kind may simply have not been shown in the movie.

Rudy's condition

Rudy suffers from albinism. Vision problems in albinism result from abnormal development of the retina and abnormal patterns of nerve connections between the eye and the brain. It is the presence of these eye problems that make Rudy's own eyes red and possibly due to the fact that he has bags under his eyes. Because of this, he stays in dark places in the dinosaur world or hunts at night for prey to reduce Hypersensitivity.


Rudy was a giant Baryonyx that had pursed the weasel named Buck in the past, his attempts having left a lasting impression on Buck, who had since revered Rudy as a worthy opponent. Rudy, like most other dinosaurs, didn't speak the language of other animals, though had no need to, as he could easily be read by his actions and the expressions on his face. He eyed all other creatures that he encountered as prey. Vicious in nature, Rudy was constantly on the hunt and quick to attack others. Someone would have to be either very brave, very foolish or very suicidal to want to battle Rudy, such as Buck and Momma.

Giant for a Baryonyx, Rudy was larger even than the Momma Tyrannosaurus Rex, possibly the biggest carnivorous dinosaur ever (dwarfed only by the the biggest saurupods like brachiosaurus). Rudy speaks a language that consists of either loud growls or roars as most other dinosaurs usually did. Rudy had a long snout filled with sharp teeth, though the skin on the front of his snout was cracked, as Buck had knocked out one of his teeth, and his forearms were equipped with giant, clawed three-fingered hands. Rudy is often stated to be roughly 60ft long. However when compared to Manny or Ellie(who are each about 16-20ft long), he is roughly six times there size. also, in the commentaries to Ice Age 3, the filmmakers explicidly stated that momma is twice as large as a real T.rex, about 80ft. Rudy is about half as big again and thus is aproximentaly 120ft long. In Buck's story when I climb up a high tree over the clouds it showed that Rudy had a fin, which supports the idea that Rudy is an Spinosaurus. However, if one looks closely in Buck's story, it's actually Rudy's neck and back.




  • Throughout most of the movie (up until the final battle at the exit of the dinosaur world) Rudy is an unseen character who is only heard or seen in silhouettes, partial images or even wreckage left behind throughout his appearances, such as his foot at Momma's feeding area or his shadow at her nest and even his glowing red eyes at times, another example is that in Buck's campfire story his face is concealed by clouds.
  • Although he is the main villain in the movie, Rudy doesn't appear in promotional merchandise or publicity thus leaving fans to first speculate that Momma is the main villain.
  • During the final battle(specifaclly when trying to squash buck), Rudy walks on four legs. While this may seem odd, a Baryonyx can walk like this.
  • Rudy is 23.2 m long and 12.3 m high and 15.1 m high when he stand with meens he is 5 m longer and 3 m higer then Momma.
  • Due to Rudy's huge size, he may not be a Baryonyx at all but may be a species of Spinosaurus that lost its fin due to evolution. Another possiblity of his large size is that the Dinosaur World has more oxygen that the world above.
  • Rudy claws are very dangerous (he was using them to swipe at Buck and Momma but missed them).