Gavin è il principale antagonista dell'undicesimo film d'animazione di Blue Sky Ice Age: Collision Course. È un Dakotaraptor che ruba le uova per vivere e il padre di Roger e Gertie.
He's voiced by Nick Offerman, who later played Norman in the 2016 musical film Sing.
Gavin is first seen in the underground Dinosaur World, stealing an egg from a Triceratops along with his children, only to be stopped by Buck the weasel who manages to fight all three of them and defeat them. Later, after Buck goes to the surface and finds his friends - the Herd. They listen to their conversation and hear that an enormous asteroid is going to crash on Earth and kill all life and Buck plans to stop it. After they leave, Gavin tells his children the must stop Buck from stopping the asteroid.
Concluding that due to their ability to fly, they will be able to survive, whilst the mammals will not. Afterwards, they track down the Herd and he reveals he is going to kill them, so they will not save all lives, and so he can rule the Earth later. Thankfully, Buck manages to lead the Herd to the forest and once again defeat Gavin and his children. They try to repeat their attack later during a storm, but end up getting electrocuted, sending all three of them paralleling towards the ground and into the trees, crashing into the ground.
During nighttime, Gavin orders his son Roger to kidnap Buck, but he accidentally takes Granny, Sid the sloth's grandmother. Gavin tries to eat her, but fails and Granny starts dragging around inside his abdomen. Gertie instead help Gavin barf up Granny and throws her off the ledge they were on, where she finds Geotopia. Finally, the Herd realize that the reason the meteor is coming is because of a magnetic attraction between the remains of the previous meteors that crashed on Earth, so they try to fill a volcano with the remains in order to blast it off to space and pull the meteor away.
Gavin, Roger, and Gertie intervene by grabbing and throwing the largest part off the mountain. Gavin then orders Roger to kill Buck, and reveals him his scheme. However, Roger realizes that they will not be able to survive the meteor's crashing. So he finally stands up to his father and manages to talk him into helping the Herd. So Gavin, Gertie and Roger help throw the meteor parts in the mountain. Suddenly Gavin a giant meteor flies coming towards Roger and Gertie and bravely jumps in the way to protect them. The rock knocks them all to the ground. However none of them are hurt. Afterwards, they appeared dancing to Brooke's song in Julian and Peaches' wedding.
It's currently unknown if Gavin had a change of heart or if he just teamed up with Buck in order to ensure his and his children's survival and showed at Peaches's wedding only as a thanks. Since Buck is shown to be back in the Dinosaur World, it can be assumed Gavin and his children did as well,
Gavin is a brave, tough, valiant, and courageous dino-bird who loves his children. However, his unsparing and ruthless nature often keeps him from thinking clearly as he was more concerned on getting revenge on Buck than helping the herd stop the asteroid. However, with some convincing from his children, Gavin spares the weasel's life, so they could save the planet showing to have a sense of honor.
- Despite the fact he is named “Gavin” in the film's promotion and in the credits his name is never said in the film.
- Unlike Soto, Cretaceous and Maelstrom, Rudy, and Gutt, the main antagonists of the first four Ice Age movies, Gavin never interacted with Manny, Sid, or Diego, the franchise's three main protagonists.
- Gavin is the second main Ice Age movie antagonist who does not die at the end of his movie, behind Rudy, or the third if Gutt survived his ordeal with the sirens.
- Gavin is the fifth main antagonist of a Blue Sky movie who doesn't die at the end of his film, after Sour Kangaroo from Horton Hears A Who!, Rudy, and Nigel from Rio.
- Gavin is also the fourth main antagonist of a Blue Sky movie to be a parent after Madame Gasket in Robots, Sour Kangaroo, and Mandrake in Epic.
- Gavin is the third Ice Age villain who can fly, behind The Lone Gunslinger and Silas, one of Gutt's henchmen.
- Gavin's voice actor, Nick Offerman was co-stars with Aziz Ansari, who voiced Squint, another one of Gutt's henchmen from, on Parks and Recreation.
- If anyone of the Herd did hear him talk is unknown but since in The Ice Age Adventures of Buck Wild Eddie is surprised by the fact that Orson can talk.