From Bulbapedia, the community-driven Pokémon encyclopedia.
Omastar (Japanese: オムスター Omstar) is a dual-type Rock/Water Fossil Pokémon introduced in Generation I.
It evolves from Omanyte starting at level 40, after it is revived from a Helix Fossil.
Biology
Omastar is a cephalopod mollusk Pokémon similar to an ammonite or nautilus. Its sky blue body has several tentacles; the tentacles toward the front are shorter and thicker than those in the back. There is a pale yellow, helix spiraled shell on its back. Several sharp spikes line the shell's midsection from the front to about halfway down its back. The shell's rim has two circular indents where Omastar's eyes are visible. Its eyes have yellow sclerae and vertically-slit pupils. It has an oval mouth with a four-sectioned, fang-like beak.
It is believed that Omastar's extinction was a consequence of the increasingly heavy weight of its shell that affected its mobility, including its hunting. Omastar swam the seas in search of prey, including prehistoric Shellder. It attacks only when prey comes near its tentacles. Omastar uses its tentacles to ensnare its prey before biting down with the deadly force of its beak. Its fangs are powerful enough to crush through rocks. With the shell broken, it would suck out the contents. Omastar was in turn preyed upon by Carracosta. Omastar is thought to be a distant ancestor to Octillery.
In the anime
Major appearances
In Attack of the Prehistoric Pokémon, two Omastar were dormant under Grampa Canyon until a dynamite blast woke them up. The two Omastar chased Ash Ketchum and Team Rocket until Aerodactyl showed up and scared them off.
In Fossil Fools, multiple Omastar were discovered to be living in the Ruins of Alph alongside their pre-evolved form Omanyte. They were moved into a museum at the end of the episode.
In Dealing With Defensive Types!, an Omastar caught Team Rocket trying to steal food from the Canalave Gym kitchen while Ash was having his Gym battle with Byron. It used Water Gun to them blasting off.
Minor appearances
In Pikachu's Vacation, an Omastar was at the Pokémon Theme Park.
In Imitation Confrontation, the Team Rocket trio's fantasy featured an Omastar.
An Omastar appeared in a fantasy in A Ruin with a View.
An Omastar appeared in a fantasy in Where's Armaldo?.
In Lucario and the Mystery of Mew, an Omastar lived in the Tree of Beginning. Another appeared in the movie's opening sequence.
In The Mastermind of Mirage Pokémon, Dr. Yung used a Mirage Omastar.
An Omastar appeared in Restore and Renew!.
Pokédex entries
| Episode
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Pokémon
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Source
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Entry
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| EP046
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Omanyte, Omastar, Kabuto, and Kabutops
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Ash's Pokédex
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Omanyte and Omastar, Kabuto and Kabutops. It is believed these Pokémon became extinct tens of thousands of years ago. The detail of their behavior is shrouded in mystery. Though some have speculated that they may still exist, none of these Pokémon have ever been seen alive.
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| Episode
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Pokémon
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Source
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Entry
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| EP163
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Omastar
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Ash's Pokédex
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Omastar, the evolved form of Omanyte. This extinct Pokémon is believed to have used its sharp fang to break through the shells of its prey in order to feed.
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In the manga
Pokémon Adventures
- Main article: Omny
Yellow has an Omastar nicknamed Omny, who she originally obtained from Misty as an Omanyte. He evolved into an Omastar by The Might of... Metapod?!.
Pokémon Pocket Monsters
An Omastar appeared in Big Rampage at the Safari Zone!?, where it evolved from an Omanyte.
An Omastar appeared in Clefairy Evolves... At Last?!.
An Omastar appeared in The Ancient Pokémon Discovery!.
In the TCG
- Main article: Omastar (TCG)
Game data
NPC appearances
Pokédex entries
| Generation I
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Kanto
#139
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| Red(ENG)
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A prehistoric Pokémon that died out when its heavy shell made it impossible to catch prey.
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| Blue
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| Yellow
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Sharp beaks ring its mouth. Its shell was too big for it to move freely, so it became extinct.
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| Stadium
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Attacks by ensnaring its enemy with its tentacles and biting with sharp fangs. Its overly-large shell makes it sluggish.
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| Generation II
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Johto
#221
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| Gold
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Apparently, it cracked Shellder's shell with its sharp fangs and sucked out the insides.
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| Silver
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Once wrapped around its prey, it never lets go. It eats the prey by tearing at it with sharp fangs.
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| Crystal
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Its heavy shell allowed it to reach only nearby food. This could be the reason it is extinct.
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| Stadium 2
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Apparently, it cracked Shellder's shell with its sharp fangs and sucked out the insides.
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| Generation III
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Hoenn
#—
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Kanto
#139
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| Ruby
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Omastar uses its tentacles to capture its prey. It is believed to have become extinct because its shell grew too large and heavy, causing its movements to become too slow and ponderous.
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| Sapphire
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| Emerald
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An Omastar uses its tentacles to capture its prey. It is believed to have become extinct because its shell grew too large, making its movements slow and ponderous.
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| FireRed
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Its tentacles are highly developed as if they are hands and feet. As soon as it ensnares prey, it bites.
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| LeafGreen
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Despite having strong fangs and tentacles, it went extinct when its heavy shell made it unable to catch prey.
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| Generation IV
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Sinnoh
#—
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Johto
#226
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| Diamond
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It is thought that this Pokémon became extinct because its spiral shell grew too large.
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| Pearl
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| Platinum
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| HeartGold
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Apparently, it cracked Shellder's shell with its sharp fangs and sucked out the insides.
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| SoulSilver
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Once wrapped around its prey, it never lets go. It eats the prey by tearing at it with sharp fangs.
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| Generation V
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Unova
#—
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| Black
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It is thought that this Pokémon became extinct because its spiral shell grew too large.
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| White
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| Black 2
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It is thought that this Pokémon became extinct because its spiral shell grew too large.
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| White 2
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| Generation VI
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Kalos
#—
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Hoenn
#—
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| X
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Its tentacles are highly developed as if they are hands and feet. As soon as it ensnares prey, it bites.
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| Y
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Once wrapped around its prey, it never lets go. It eats the prey by tearing at it with sharp fangs.
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| Omega Ruby
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Omastar uses its tentacles to capture its prey. It is believed to have become extinct because its shell grew too large and heavy, causing its movements to become too slow and ponderous.
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| Alpha Sapphire
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| Generation VII
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Alola
USUM: #228
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Kanto
#139
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| This Pokémon has no Pokédex entries in Sun and Moon.
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| Ultra Sun
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Its heavy shell is thought to be the reason this ancient Pokémon died out. It's apparently a distant ancestor of Octillery.
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| Ultra Moon
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It wraps its prey in its tentacles to immobilize them and then finishes them off with its sharp fangs.
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| Let's Go Pikachu
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Its sharp beak rings its mouth. Its shell was too big for it to move freely, so it became extinct.
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| Let's Go Eevee
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| Generation VIII
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Galar
Crown Tundra #124
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Sinnoh
#—
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Hisui
#—
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| This Pokémon has no Pokédex entries in Legends: Arceus.
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| Sword
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Weighed down by a large and heavy shell, Omastar couldn't move very fast. Some say it went extinct because it was unable to catch food.
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| Shield
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Omastar's sharp fangs could crush rock, but the Pokémon can attack only the prey that come within reach of its tentacles.
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| Brilliant Diamond
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It is thought that this Pokémon became extinct because its spiral shell grew too large.
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| Shining Pearl
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Game locations
In side games
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| Generation II
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| This Pokémon is unavailable in Generation II side games.
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Held items
Stats
Base stats
| Stat
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Range
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| At Lv. 50
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At Lv. 100
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70
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130 - 177
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250 - 344
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60
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58 - 123
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112 - 240
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125
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117 - 194
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229 - 383
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115
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108 - 183
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211 - 361
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70
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67 - 134
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130 - 262
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55
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54 - 117
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103 - 229
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Total: 495
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Other Pokémon with this total
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- Minimum stats are calculated with 0 EVs, IVs of 0, and (if applicable) a hindering nature.
- Maximum stats are calculated with 252 EVs, IVs of 31, and (if applicable) a helpful nature.
- This Pokémon's Special base stat in Generation I was 115.
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Pokéathlon stats
Type effectiveness
| Under normal battle conditions in Generation IX, this Pokémon is:
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Learnset
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This Pokémon is unavailable within Generation IX.
Click on the generation numbers above to see Omastar's learnsets from other generations.
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TCG-only moves
Side game data
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Pokémon Rumble Rush
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Walking Speed: 1.67 seconds
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Base HP: 53
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| Base Attack: 79
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Base Defense: 59
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Base Speed: 60
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Evolution
Sprites
Trivia
- In early English-language promotional material for Pokémon Red and Blue, Omastar was originally known as "Kargo". This name is derived from "escargot" (French for snail).
Origin
Omastar appears to be based on a type of ammonite, prehistoric mollusks related to the present-day squid and octopus that lived between the Devonian period and the Cretaceous period.
In addition, its method of grabbing prey and cracking their shells with ring-shaped mouths may be based on Anomalocaris. It may also draw inspiration from the nautilus, a species of modern-day mollusk.
Name origin
Omastar may be a combination of its Japanese name, a phonetic anagram of ammonite, and star, for its body shape and five-pointed shell.
Omstar may be a combination of 鸚鵡貝 ōmugai (nautilus) and star.
In other languages
| Language
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Title
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Meaning
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 Japanese
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オムスター Omstar
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From 鸚鵡貝 ōmugai and star
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 French
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Amonistar
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From ammonite and star
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 Spanish
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Omastar
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Same as English name
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 German
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Amoroso
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From Ammonit
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 Italian
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Omastar
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Same as English name
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 Korean
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암스타 Amsta
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From ammonite, 암 (岩) am, and star
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 Mandarin Chinese
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多刺菊石獸 / 多刺菊石兽 Duōcìjúshíshòu
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From 多刺 duōcì, 菊石 júshí, and 獸 / 兽 shòu
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 Cantonese Chinese
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多刺菊石獸 Dōchigūksehksau
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From 多刺 dōchi, 菊石 gūksehk, and 獸 sau
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| More languages
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 Hindi
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ओमास्टार Omastar
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Transcription of English name
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 Russian
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Омастар Omastar
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Transcription of English name
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 Thai
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ออมสตาร์ Omsata
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Transcription of Japanese name
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Related articles
External links
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This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.
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For other sprites and images, please see Omastar images on the Bulbagarden Archives.
