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Omastar オムスター Omstar #139
Artwork from FR/LG
Type Rock Water Unknown Unknown Blue-Striped Unknown Unknown Unknown Unknown Unknown Unknown Unknown Unknown	Category Spiral Pokémon
Abilities Swift Swim or Shell Armor Shell Armor Blue-Striped -----	Exp. at Lv. 100 1,000,000
Regional Pokédex numbers Kanto #139 Johto #221 Hoenn #294 Sinnoh Expression error: Unrecognized punctuation character "?". Unova Not in any regional Pokédex
Regional Browser numbers Fiore R— Almia R— Oblivia
Height 0'0" Imperial 0.0 m Metric 0'0"/0.0 m Red-Striped 0'0"/0.0 m Blue-Striped 0'0"/0.0 m
Weight 0.0 lbs. Imperial 0.0 kg Metric 0.0 lbs./0.0 kg Red-Striped 0.0 lbs./0.0 kg Blue-Striped 0.0 lbs./0.0 kg
Dex color Unknown	Catch rate 45 (5.9%)
Body style Blue-Striped	Footprint      Blue-Striped
Gender ratio Gender unknown Unknown Gender unknown
Breeding Water 1 and Water 3 groups 1 cycles (255 minimum steps)
EV yield HP 0 Atk 0 Def 0 Sp.Atk 0 Sp.Def 0 Speed 0 Base Exp.: 199 Battle Exp.: 1991*
External links {{Links/{{{generation}}}|pokefordex=omastar|ndex=139|name=Omastar }}

Omastar (Japanese: オムスター Omstar) is a Rock/Water-type Pokémon.

Pokédex entries

Pokémon Red and Blue

A prehistoric Pokémon that died out when its heavy shell made it impossible to catch prey.

Pokémon Yellow

Sharp beaks ring its mouth. Its shell was too big for it to move freely, so it became extinct.

Pokémon Gold

Apparently, it cracked Shellder's shell with its sharp fangs and sucked out the insides.

Pokémon Silver

Once wrapped around its prey, it never lets go. It eats the prey by tearing at it with sharp fangs.

Pokémon Crystal

Its heavy shell allowed it to reach only nearby food. This could be the reason it is extinct.

Pokémon Ruby and Sapphire

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.

Pokémon Emerald

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.

Pokémon FireRed

Its tentacles are highly developed as if they are hands and feet. As soon as it ensnares prey, it bites.

Name origin

Omastar's name is a corruption of ammonite, the name of the extinct creature on which it is based, and star.

Omastar originally had the name "Kargo," a misspelling of the last five letters of "escargo," which is French for snail.

Base stats

Type effectiveness

RBY

Later versions

In the anime

Omastar first appeared in EP046, alongside all the other Generation I Fossil Pokémon. They were sleeping under Grandpa Canyon until a dynamite blast woke them up. The Water/Rock-typed Fossil Pokémon chased Ash Ketchum and Team Rocket until Aerodactyl showed up and scared them off.

In other languages

• German: Amoroso
• French: Amonistar
• Korean: 암스타 Amseuta

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This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon as a species.