Tyrunt are dinosaurian Pokémon, closely resembling theropods such as Tyrannosaurus. Their bodies are grayish-brown, with a lighter gray shade on their bellies and lower jaw. The back comes to a peaked hump, and the tail is short and pointed. They have tiny forelimbs with only two clawed digits, both white. The hind legs are more robust, and its feet feature three white claws and an adjoining rear claw; this fourth digit is stone colored. The front part of each leg also features two, armor-like plates, which are rectangular in shape.
Spiky, white structures, similar to the primitive feathering on many dinosaurs, extend from the back of the neck. Their heads are proportionally large, with a ridged snout and powerful jaws. They have two pointed teeth in the lower jaw, and the upper jaw features tooth-like projections on either side and a slightly-decurved hook at the end. Their large white eyes are semicircular with a black border along the lower curve. Orange, triangular horn-like crests extend from above each eye and point away from the snout, and a similar projection juts out of the tail.
Tyrunt have spoiled and selfish natures. It will throw tantrums and run wild if it encounters something it does not like, and its strong jaws have enough force to shred an automobile. It doesn't seem to realize its own strength; when frolicking with other Pokémon, it tends to unknowingly inflict grave injuries on them while playing. This Pokémon lived 100 million years ago, where theories suggest it might have had a different form then.
Major appearances
Tyrunt debuted in Climbing the Walls!, under the ownership of Grant. It defeated both Froakie and Fletchling during a Gym battle against Ash before being defeated by Pikachu's Thunderbolt. Tyrunt reappeared in Rocking Kalos Defenses! and Forming a More Perfect Union!, where it participated in the fight against the Giant Rock.
A Tyrunt appeared in Pikachu, What's This Key?. It was a resident of a world full of ice and snow, which was accessed by Pikachu and his friends, courtesy of Klefki's keys.
Multiple Tyrunt appeared in The Tiny Caretaker!, under the ownership of several Scientists. One of them was stolen by Team Rocket, but it escaped and was found by Bonnie. It eventually evolved into a Tyrantrum to save her.
Minor appearances
A Tyrunt appeared in Diancie and the Cocoon of Destruction.
Pokédex entries
Episode
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Pokémon
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Source
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Entry
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XY025
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Tyrunt
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Ash's Pokédex
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Tyrunt, the Royal Heir Pokémon. Tyrunt's jaws are so big and powerful, it can crunch up a car. If it doesn't like something, it responds with a wild tantrum.
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XY087
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Tyrunt
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Ash's Pokédex
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Tyrunt, the Royal Heir Pokémon. When unhappy, Tyrunt will go on an angry rampage. It evolves into Tyrantrum.
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Origin
Tyrunt seems to be mostly based on juvenile Tyrannosaurus, though it also shares characteristics with Gorgosaurus (like the orange crests above each of Tyrunt's eyes).
Name origin
Tyrunt is a combination of Tyrannosaurus, tyrant, and runt.
Chigoras may be a combination of 稚児 chigo (baby) and Tyrannosaurus. It may also derive from 小さい chisai (little) or ちび chibi (runt).