#139

Rock

Water

POKÉDEX No. #139

Omastar

Spiral Pokémon

Generation 1

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

Weak to

Grass

×4

Fighting

Ground

Electric

Height1.0 m

Weight35.0 kg

AbilitiesSwift Swim

Varieties1

Evolution Chain

Base Stats

Lv.100 Range

HP70
250–344
Attack60
112–240
Defense125
229–383
Sp. Atk115
211–361
Sp. Def70
130–262
Speed55
103–229

Total495

/ 720

BST495

65 percentile (1025)+87 vs Gen 1 avg (408)

Stat Radar

This PokémonAverage

Weak to

Grass

Fighting

Ground

Electric

Resists

Fire

Normal

Flying

Poison

Ice

Full Type Defense Chart ↓

Species Identity

Core species facts, alternate varieties, and Pokédex placements at a glance.

Generation

Generation 1

Habitat

Sea

Color

Blue

Shape

Tentacles

Gender Difference

Forms Switchable

Evolves From

Omanyte#138

Regional Pokédex Numbers

National	#139
Crown Tundra	#124
Kanto	#139
Letsgo Kanto	#139
Original Johto	#221
Updated Akala	#129
Updated Alola	#228
Updated Johto	#226

Training Profile

Battle-ready training facts pulled from EV yield, growth curve, and wild held item data.

Base Experience

173

EV Yield

+2 Defense

Growth Curve

Medium Fast

x³

Exp at Lv. 50

125,000

Exp at Lv. 100

1,000,000

Wild Held Items

No wild held item data available.

Evolution Chain

#138

Omanyte

→

Level 40

#139

Omastar

Encounter Guide

Where this Pokémon appears in supported games, including method, level range, and encounter conditions.

Sword: The Crown Tundra

12 spots

100% max

Roaring-Sea Caves

100%

Method: Special overworld spawn in a fixed location.
Level Range: Lv. 68
Conditions: Any

Ballimere Lake (Max Den N)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Frigid Sea (Max Den C)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den F)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den P)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Foot (Max Den B)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Snowslide Slope (Max Den I)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Ballimere Lake (Max Den N)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Frigid Sea (Max Den C)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den F)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den P)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Foot (Max Den B)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Type Matchups

Understanding damage taken from different types is crucial for battles. Plan your team accordingly!

Weaknesses

4× Weakness

4×

Takes 4× damage from these types - extremely vulnerable!

Grass

4×

2× Weakness

2×

Takes double damage from these types - watch out!

Fighting

Ground

Electric

Resistances

¼× Resistance

¼×

Takes quarter damage from these types - excellent defense!

Fire

0.25×

½× Resistance

½×

Takes half damage from these types - good defense!

0.5×

0.5×

0.5×

0.5×

Tip: Build your team with Pokémon that cover each other's weaknesses!

Full Type Defense Chart

Damage multipliers from all 18 attacking types

½×

2×

½×

½×

2×

1×

1×

1×

1×

¼×

1×

4×

2×

1×

½×

1×

1×

1×

Battle Profile

Offensive Coverage

Super effective against these types with STAB moves

Strategic Insight

Omastar's rock/water typing gives it 4 weaknesses but strong offensive coverage against flying, bug, fire, ice, ground, rock types

Battle Strategy

Offensive Coverage

Flying

Bug

Fire

Ice

Ground

Rock

Omastar's Rock / Water typing gives it 4 weaknesses but strong offensive coverage against flying, bug, fire, ice, ground, rock types

Recommended NaturesBased on stat distribution

Modest

+Sp. Atk−Attack

Quiet

+Sp. Atk−Speed

In-Depth Analysis

Omastar's 495 base stat total marks it as a slow bruiser that trades speed for raw hitting power. Defense (125) carries most matchups, but a low Speed stat of 55 means careful positioning matters.

Defensively, the Rock, Water combination gives Omastar 5 resistances and 4 weaknesses to plan around. Watch out for Grass moves in particular — they land for 4× damage. Offensively it pressures 6 types with super-effective STAB coverage.

A low catch rate of 45 makes Omastar a genuinely tough catch; bring strong balls and status moves. It levels on the Medium experience curve. Defeating it grants Defense +2 EVs, which is worth remembering when EV-training your own team.

Move Insights

High-signal moves surfaced from learnsets and move metadata, grouped by battle purpose.

Best STAB Options

Reliable same-type attacks that match this Pokémon's typing.

Meteor Beam

Tutor Moves

Sword Shield

Rock

Power: 120Accuracy: 90PP: 10Special

Requires a turn to charge before attacking. Raises the users Special Attack by 1 stage after the first turn.

Hydro Pump

Learned at Lv. 75

X Y

Water

Power: 110Accuracy: 80PP: 5Special

Inflicts regular damage with no additional effect.

Surf

Learned at Lv. 56

Sword Shield

Water

Power: 90Accuracy: 100PP: 15Special

Inflicts regular damage and can hit Dive users.

Coverage Picks

Off-type attacks that expand what this Pokémon can threaten.

Blizzard

TM/TR Moves

Yellow

Ice

Power: 110Accuracy: 70PP: 5SpecialFreeze

Has a chance to freeze the target.

Body Slam

TM/TR Moves

Yellow

Normal

Power: 85Accuracy: 100PP: 15PhysicalParalysis

Has a chance to paralyze the target.

Knock Off

Tutor Moves

Ultra Sun Ultra Moon

Dark

Power: 65Accuracy: 100PP: 20Physical

Target drops its held item.

Utility & Status

Support, disruption, and setup tools worth noticing.

Attract

TM/TR Moves

Normal

Accuracy: 100PP: 15StatusInfatuation

Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.

Body Slam

TM/TR Moves

Yellow

Normal

Power: 85Accuracy: 100PP: 15PhysicalParalysis

Has a chance to paralyze the target.

Protect

Learned at Lv. 43

Sword Shield

Normal

PP: 10StatusProtect

Prevents any moves from hitting the user this turn.

Blizzard

TM/TR Moves

Yellow

Ice

Power: 110Accuracy: 70PP: 5SpecialFreeze

Has a chance to freeze the target.

Related Guides & News

Guide

Evolution Strategies →

Guide

Stats & IVs Guide →

Related Pokémon

TCG Cards

View all Omastar trading cards and their competitive usage.

View Omastar TCG Cards →

Reference Data

Names in Other Languages

English	Omastar
Japanese	オムスター
Japanese (Kanji)	オムスター
Roomaji	Omstar
Korean	암스타
French	Amonistar
German	Amoroso
Spanish	Omastar
Italian	Omastar
Chinese (Traditional)	多刺菊石獸
Chinese (Simplified)	多刺菊石兽

Sprite Gallery

Yellow

Red Blue

Pokédex Data

Height

1.0 m

Weight

35.0 kg

Type

Rock

Water

Abilities

Doubles Speed during rain.

Protects against critical hits.

Raises Speed and lowers Defense by one stage each upon being hit by a physical move.

Breeding Information

🥚

Egg Groups

Water 1Water 3

⚧

Gender Ratio

♂

87.5%

♀

12.5%

🐣

Hatch Steps

7,650

Hatch Counter: 30

⚪

Capture Rate

Higher values mean easier to catch

❤️

Base Happiness

Initial friendship level

📈

Growth Rate

Medium Fast

Experience points needed to level up

Move Name

Crunch

crunch

Lv. 1

Spike Cannon

spike-cannon

Lv. 44

Bide

bide

Lv. 1

Bind

bind

Lv. 1

Bite

bite

Lv. 22

Constrict

constrict

Lv. 1

Horn Attack

horn-attack

Lv. 34

Hydro Pump

hydro-pump

Lv. 75

Leer

leer

Lv. 39

Rollout

rollout

Lv. 16

Sand Attack

sand-attack

Lv. 1

Supersonic

supersonic

Lv. 1

Water Gun

water-gun

Lv. 19

Withdraw

withdraw

Lv. 4

Mud Shot

mud-shot

Lv. 25

Rock Throw

rock-throw

Lv. 26

Brine

brine

Lv. 35

Ancient Power

ancient-power

Lv. 55

Protect

protect

Lv. 43

Rock Slide

rock-slide

Lv. 37

Tickle

tickle

Lv. 48

Rock Blast

rock-blast

Lv. 56

Surf

surf

Lv. 56

Shell Smash

shell-smash

Lv. 67

Pokédex Entries

Frequently Asked Questions

What type is Omastar?

Omastar is a dual-type Rock, Water Pokémon.

What are Omastar's weaknesses?

Omastar takes 4× damage from Grass type moves and takes 2× damage from Fighting, Ground, Electric type moves.

How does Omastar evolve?

Omastar is the final form of the Omanyte → Omastar evolution line.

What are Omastar's base stats?

Omastar has a base stat total of 495: HP 70, Attack 60, Defense 125, Sp. Atk 115, Sp. Def 70, Speed 55. Its highest stat is Defense (125).

What abilities does Omastar have?

Related Resources

Type Information

All Rock Type Pokémon
Explore the complete rock type guide
Water Type Guide
Learn about water type advantages
Type Effectiveness Chart
View complete type matchup chart

Generation 1 Pokémon

Browse Gen 1 Pokémon
Discover all Generation 1 Pokémon

Pokédex Navigation

← Previous Pokémon (#0138)
View previous Pokémon in the Pokédex
Next Pokémon (#0140) →
View next Pokémon in the Pokédex

Training Guides

Stats & IVs Guide
Understanding Pokémon stats and individual values
Evolution Strategies
Optimal evolution timing and methods
Move Selection Guide
Choose the best moves for your Pokémon

Encounter Guide

Where this Pokémon appears in supported games, including method, level range, and encounter conditions.

Sword: The Crown Tundra

12 spots

100% max

Roaring-Sea Caves

100%

Method: Special overworld spawn in a fixed location.
Level Range: Lv. 68
Conditions: Any

Ballimere Lake (Max Den N)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Frigid Sea (Max Den C)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den F)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den P)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Foot (Max Den B)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Snowslide Slope (Max Den I)

25%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a weak, red pillar of light., Start a max raid with a difficulty of 5 stars.

Ballimere Lake (Max Den N)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Frigid Sea (Max Den C)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den F)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Bed (Max Den P)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.

Giant's Foot (Max Den B)

20%

Method: Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle.
Level Range: Lv. 55-60
Conditions: Start max raid in a den with a strong, purple pillar of light., Start a max raid with a difficulty of 5 stars.