Essentials

Omastar

Spiral Pokémon

Omastar

Rock Water

Abilities

Swift Swim

Doubles Speed during rain.

Shell Armor

Protects against critical hits.

Hidden Ability

Weak Armor

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

Damage Taken

  • Bug 1
  • Dark 1
  • Dragon 1
  • Electric 2
  • Fairy 1
  • Fighting 2
  • Fire ¼
  • Flying ½
  • Ghost 1
  • Grass 4
  • Ground 2
  • Ice ½
  • Normal ½
  • Poison ½
  • Psychic 1
  • Rock 1
  • Steel 1
  • Water 1

Pokédex Numbers

Introduced in
Generation 1
National
139
Kanto
139 Red, Blue, Yellow, FireRed, LeafGreen
Original Johto
221 Gold, Silver, Crystal
Updated Johto
226 HeartGold, SoulSilver
Updated Alola
228 Ultra Sun, Ultra Moon
Updated Akala
129 Ultra Sun, Ultra Moon

Names

Japanese
オムスター (omusutaa)
オムスター
Official roomaji
Omstar
Korean
암스타
Chinese
多刺菊石獸
多刺菊石兽
French
Amonistar
German
Amoroso
Spanish
Omastar
Italian
Omastar

Breeding

Gender
⅞ male, ⅛ female Search:
Egg groups
  • Water 1
  • Water 3
Search:
Hatch counter
30 Search:
Steps to hatch
7905 / 4080

Compatibility

Training

Base EXP
173 Search:
Effort points
  • 2 Defense
Capture rate
45 Search:
Base happiness
70 Search:
Growth rate
medium Search:

Wild held items

Generation 3 nothing
Generation 4 nothing
Generation 5 nothing
Generation 6 nothing
Generation 7 nothing

Evolution

Baby Basic Stage 1 Stage 2
Omanyte Omastar Level up, starting at level 40

Stats

Pctile Min IVs Max IVs
HP
70
 56.6 313 344
Attack
60
 29.8 188 219
Defense
125
 93.9 318 349
Special Attack
115
 88.6 298 329
Special Defense
70
 50.6 208 239
Speed
55
 34.8 178 209
Total
495
 67.1

HeartGold, SoulSilver Pokéathlon Performance

★ Minimum; ✯ Base; ☆ Maximum

Speed
★✯☆
Power
★★✯☆
Skill
★✯✯✯
Stamina
★✯☆
Jump
★★
Total
7/13/16

Flavor

Flavor Text

Generation 5
Black, White, Black 2, White 2

It is thought that this Pokémon became extinct because its spiral shell grew too large.

Generation 6
X

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

Y

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

Omega Ruby, Alpha 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.

Generation 7
Ultra Sun

Its heavy shell is thought to be the reason this ancient Pokémon died out. It’s apparently a distant ancestor of Octillery.

Ultra Moon

It wraps its prey in its tentacles to immobilize them and then finishes them off with its sharp fangs.

Sprites

Omastar Omastar

Miscellany

Species
Spiral Pokémon Search:
Color
Blue Search:
Cry
Habitat FireRed, LeafGreen
sea Search:
Footprint
Omastar
Shape
Cilial Search:

Height

Trainer dude

Omastar
10

3'3.4"
1.0 m

Weight

Trainer dudette

Omastar
350

77.2 lb
35.0 kg

Locations

Pal Park

Area
Sea
Score
70
Rate
20

Moves

Rock and Water moves get STAB, and have their type highlighted in green.

Special moves better suit Omastar's higher Special Attack, and have their class highlighted in green.

Generation 1 Generation 2 Ruby, Sapphire
Emerald
Colosseum
XD 		FireRed, LeafGreen Diamond, Pearl
Platinum 		HeartGold, SoulSilver Generation 5 X, Y Omega Ruby, Alpha Sapphire Generation 7 Move Type Class PP Power Acc Pri Effect
Level up: Learned when a Pokémon reaches a certain level.
— — Hydro Pump Water special 5 110 80%

Inflicts regular damage with no additional effect.
— — — — — — — — Constrict Normal physical 35 10 100%

Has a 10% chance to lower the target's Speed by one stage.
— Water Gun Water special 25 40 100%

Inflicts regular damage with no additional effect.
— — — — — — — — — Withdraw Water status 40 — —

Raises the user's Defense by one stage.
— — — — — — — — Bite Dark physical 25 60 100%

Has a 30% chance to make the target flinch.
— Horn Attack Normal physical 25 65 100%

Inflicts regular damage with no additional effect.
34 Horn Attack Normal physical 25 65 100%

Inflicts regular damage with no additional effect.
0 Spike Cannon Normal physical 15 20 100%

Hits 2-5 times in one turn.
— Spike Cannon Normal physical 15 20 100%

Hits 2-5 times in one turn.
— Hydro Pump Water special 5 110 80%

Inflicts regular damage with no additional effect.
— Constrict Normal physical 35 10 100%

Has a 10% chance to lower the target's Speed by one stage.
— Withdraw Water status 40 — —

Raises the user's Defense by one stage.
13 13 7 7 7 7 7 — Bite Dark physical 25 60 100%

Has a 30% chance to make the target flinch.
7 Bite Dark physical 25 60 100%

Has a 30% chance to make the target flinch.
19 19 — 10 10 10 10 10 10 Water Gun Water special 25 40 100%

Inflicts regular damage with no additional effect.
16 16 16 16 16 16 Rollout Rock physical 20 30 90%

Power doubles every turn this move is used in succession after the first, resetting after five turns.
39 31 19 19 19 19 19 19 Leer Normal status 30 — 100%

Lowers the target's Defense by one stage.
13 Bite Dark physical 25 60 100%

Has a 30% chance to make the target flinch.
19 Water Gun Water special 25 40 100%

Inflicts regular damage with no additional effect.
25 25 25 25 25 25 25 25 Mud Shot Ground special 15 55 95%

Has a 100% chance to lower the target's Speed by one stage.
31 31 Leer Normal status 30 — 100%

Lowers the target's Defense by one stage.
28 28 28 28 28 28 Brine Water special 10 65 100%

Has double power against Pokémon that have less than half their max HP remaining.
37 37 37 34 34 34 34 34 34 Protect Normal status 10 — — 4

Prevents any moves from hitting the user this turn.
37 37 37 37 37 37 Ancient Power Rock special 5 60 100%

Has a 10% chance to raise all of the user's stats by one stage.
44 40 40 40 40 40 40 40 40 Spike Cannon Normal physical 15 20 100%

Hits 2-5 times in one turn.
46 46 48 48 48 48 48 48 Tickle Normal status 20 — 100%

Lowers the target's Attack and Defense by one stage.
56 56 56 56 56 56 Rock Blast Rock physical 10 25 90%

Hits 2-5 times in one turn.
67 67 67 67 Shell Smash Normal status 15 — —

Raises user's Attack, Special Attack, and Speed by two stages. Lower user's Defense and Special Defense by one stage.
54 55 55 Ancient Power Rock special 5 60 100%

Has a 10% chance to raise all of the user's stats by one stage.
49 65 65 65 67 67 75 75 75 75 Hydro Pump Water special 5 110 80%

Inflicts regular damage with no additional effect.
Generation 1 Generation 2 Ruby, Sapphire
Emerald 		FireRed, LeafGreen Diamond, Pearl
Platinum 		HeartGold, SoulSilver Generation 5 X, Y Omega Ruby, Alpha Sapphire Generation 7 Move Type Class PP Power Acc Pri Effect
Egg: Appears on a newly-hatched Pokémon, if the father had the same move.
Egg, learned by Omanyte but not Omastar
• • • • • • • • • Aurora Beam Ice special 20 65 100%

Has a 10% chance to lower the target's Attack by one stage.
• • • • Bide Normal physical 10 * — 1

User waits for two turns, then hits back for twice the damage it took.
• • • • • • • • • Bubble Beam Water special 20 65 100%

Has a 10% chance to lower the target's Speed by one stage.
• • • • • • • • • Haze Ice status 30 — —

Resets all Pokémon's stats, accuracy, and evasion.
• • • • • • Knock Off Dark physical 20 65 100%

Target drops its held item.
• • • • • Muddy Water Water special 10 90 85%

Has a 30% chance to lower the target's accuracy by one stage.
• • • Reflect Type Normal status 15 — —

User becomes the target's type.
• • • • Rock Slide Rock physical 10 75 90%

Has a 30% chance to make the target flinch.
• • • • • • • • • Slam Normal physical 20 80 75%

Inflicts regular damage with no additional effect.
• • • • • • • • Spikes Ground status 20 — —

Scatters Spikes, hurting opposing Pokémon that switch in.
• • • • • • • • • Supersonic Normal status 20 — 55%

Confuses the target.
• • • • • • Toxic Spikes Poison status 20 — —

Scatters poisoned spikes, poisoning opposing Pokémon that switch in.
• • • • Water Pulse Water special 20 60 100%

Has a 20% chance to confuse the target.
• • • • Whirlpool Water special 15 35 85%

Prevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns.
• • • • • • Wring Out Normal special 5 * 100%

Power increases against targets with more HP remaining, up to a maximum of 121 power.
Generation 1 Generation 2 Emerald
XD 		FireRed, LeafGreen Diamond, Pearl
Platinum 		HeartGold, SoulSilver Generation 5 X, Y Omega Ruby, Alpha Sapphire Generation 7 Move Type Class PP Power Acc Pri Effect
Tutor: Can be taught at any time by an NPC.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Ancient Power Rock special 5 60 100%

Has a 10% chance to raise all of the user's stats by one stage.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Bind Normal physical 20 15 85%

Prevents the target from fleeing and inflicts damage for 2-5 turns.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Body Slam Normal physical 15 85 100%

Has a 30% chance to paralyze the target.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Dive Water physical 10 80 100%

User dives underwater, dodging all attacks, and hits next turn.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Double-Edge Normal physical 15 120 100%

User receives 1/3 the damage inflicted in recoil.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Earth Power Ground special 10 90 100%

Has a 10% chance to lower the target's Special Defense by one stage.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Endure Normal status 10 — — 4

Prevents the user's HP from lowering below 1 this turn.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Headbutt Normal physical 15 70 100%

Has a 30% chance to make the target flinch.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Ice Beam Ice special 10 90 100%

Has a 10% chance to freeze the target.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Icy Wind Ice special 15 55 95%

Has a 100% chance to lower the target's Speed by one stage.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Iron Defense Steel status 15 — —

Raises the user's Defense by two stages.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Knock Off Dark physical 20 65 100%

Target drops its held item.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Mimic Normal status 10 — —

Copies the target's last used move.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Rock Slide Rock physical 10 75 90%

Has a 30% chance to make the target flinch.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Rollout Rock physical 20 30 90%

Power doubles every turn this move is used in succession after the first, resetting after five turns.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Seismic Toss Fighting physical 20 * 100%

Inflicts damage equal to the user's level.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Sleep Talk Normal status 10 — —

Randomly uses one of the user's other three moves. Only works if the user is sleeping.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Snore Normal special 15 50 100%

Has a 30% chance to make the target flinch. Only works if the user is sleeping.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Stealth Rock Rock status 20 — —

Causes damage when opposing Pokémon switch in.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Substitute Normal status 10 — —

Transfers 1/4 of the user's max HP into a doll, protecting the user from further damage or status changes until it breaks.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Swagger Normal status 15 — 85%

Raises the target's Attack by two stages and confuses the target.
Crystal Emerald XD FireRed, LeafGreen Platinum HeartGold, SoulSilver Black 2, White 2 Omega Ruby, Alpha Sapphire Water Pulse Water special 20 60 100%

Has a 20% chance to confuse the target.
Generation 1 Generation 2 Ruby, Sapphire
Emerald
Colosseum
XD 		FireRed, LeafGreen Diamond, Pearl
Platinum 		HeartGold, SoulSilver Generation 5 X, Y Omega Ruby, Alpha Sapphire Generation 7 Move Type Class PP Power Acc Pri Effect
Machine: Can be taught at any time by using a TM or HM.
03 03 03 03 Water Pulse Water special 20 60 100%

Has a 20% chance to confuse the target.
02 Headbutt Normal physical 15 70 100%

Has a 30% chance to make the target flinch.
03 Curse Ghost status 10 — —

Ghosts pay half their max HP to hurt the target every turn. Others decrease Speed but raise Attack and Defense.
04 Rollout Rock physical 20 30 90%

Power doubles every turn this move is used in succession after the first, resetting after five turns.
06 06 06 06 06 06 06 06 06 06 Toxic Poison status 10 — 90%

Badly poisons the target, inflicting more damage every turn.
08 Rock Smash Fighting physical 15 40 100%

Has a 50% chance to lower the target's Defense by one stage.
07 07 07 07 07 07 07 07 Hail Ice status 10 — —

Changes the weather to a hailstorm for five turns.
07 Horn Drill Normal physical 5 * 30%

Causes a one-hit KO.
10 10 10 10 10 10 10 10 10 Hidden Power Normal special 15 60 100%

Power and type depend upon user's IVs. Power can range from 30 to 70.
13 Snore Normal special 15 50 100%

Has a 30% chance to make the target flinch. Only works if the user is sleeping.
08 Body Slam Normal physical 15 85 100%

Has a 30% chance to paralyze the target.
09 Take Down Normal physical 20 90 85%

User receives 1/4 the damage it inflicts in recoil.
10 Double-Edge Normal physical 15 120 100%

User receives 1/3 the damage inflicted in recoil.
11 Bubble Beam Water special 20 65 100%

Has a 10% chance to lower the target's Speed by one stage.
12 Water Gun Water special 25 40 100%

Inflicts regular damage with no additional effect.
13 13 13 13 13 13 13 13 13 Ice Beam Ice special 10 90 100%

Has a 10% chance to freeze the target.
14 14 14 14 14 14 14 14 14 14 Blizzard Ice special 5 110 70%

Has a 10% chance to freeze the target.
15 15 15 15 15 15 15 15 15 15 Hyper Beam Normal special 5 150 90%

User foregoes its next turn to recharge.
17 Submission Fighting physical 20 80 80%

User receives 1/4 the damage it inflicts in recoil.
19 Seismic Toss Fighting physical 20 * 100%

Inflicts damage equal to the user's level.
20 Rage Normal physical 20 20 100%

If the user is hit after using this move, its Attack rises by one stage.
31 Mimic Normal status 10 — —

Copies the target's last used move.
16 Icy Wind Ice special 15 55 95%

Has a 100% chance to lower the target's Speed by one stage.
17 17 17 17 17 17 17 17 17 Protect Normal status 10 — — 4

Prevents any moves from hitting the user this turn.
18 18 18 18 18 18 18 18 18 Rain Dance Water status 5 — —

Changes the weather to rain for five turns.
20 Endure Normal status 10 — — 4

Prevents the user's HP from lowering below 1 this turn.
21 21 21 21 21 21 21 21 21 Frustration Normal physical 20 * 100%

Power increases as happiness decreases, up to a maximum of 102.
23 23 23 23 Smack Down Rock physical 15 50 100%

Removes any immunity to Ground damage.
27 27 27 27 27 27 27 27 27 Return Normal physical 20 * 100%

Power increases with happiness, up to a maximum of 102.
32 32 32 32 32 32 32 32 32 32 Double Team Normal status 15 — —

Raises the user's evasion by one stage.
34 Swagger Normal status 15 — 85%

Raises the target's Attack by two stages and confuses the target.
35 Sleep Talk Normal status 10 — —

Randomly uses one of the user's other three moves. Only works if the user is sleeping.
37 37 37 37 37 37 37 37 37 Sandstorm Rock status 10 — —

Changes the weather to a sandstorm for five turns.
39 39 39 39 39 39 39 39 Rock Tomb Rock physical 15 60 95%

Has a 100% chance to lower the target's Speed by one stage.
42 42 42 42 42 42 42 42 Facade Normal physical 20 70 100%

Power doubles if user is burned, paralyzed, or poisoned.
43 43 43 43 Secret Power Normal physical 20 70 100%

Has a 30% chance to inflict a status effect which depends upon the terrain.
33 Reflect Psychic status 20 — —

Reduces damage from physical attacks by half.
34 Bide Normal physical 10 * — 1

User waits for two turns, then hits back for twice the damage it took.
40 Skull Bash Normal physical 10 130 100%

Raises the user's Defense by one stage. User charges for one turn before attacking.
44 44 44 44 44 44 44 44 44 44 Rest Psychic status 10 — —

User sleeps for two turns, completely healing itself.
45 45 45 45 45 45 45 45 45 Attract Normal status 15 — 100%

Target falls in love if it has the opposite gender, and has a 50% chance to refuse attacking the user.
46 46 46 46 46 46 46 46 46 Thief Dark physical 25 60 100%

Takes the target's item.
55 55 Brine Water special 10 65 100%

Has double power against Pokémon that have less than half their max HP remaining.
58 58 Endure Normal status 10 — — 4

Prevents the user's HP from lowering below 1 this turn.
48 48 48 48 Round Normal special 15 60 100%

Has double power if it's used more than once per turn.
55 55 55 55 Scald Water special 15 80 100%

Has a 30% chance to burn the target.
68 68 68 68 68 68 Giga Impact Normal physical 5 150 90%

User foregoes its next turn to recharge.
69 69 69 69 69 69 Rock Polish Rock status 20 — —

Raises the user's Speed by two stages.
71 71 71 71 71 71 Stone Edge Rock physical 5 100 80%

Has an increased chance for a critical hit.
74 74 74 74 74 74 Gyro Ball Steel physical 5 * 100%

Power raises when the user has lower Speed, up to a maximum of 150.
76 76 Stealth Rock Rock status 20 — —

Causes damage when opposing Pokémon switch in.
78 78 Captivate Normal status 20 — 100%

Lowers the target's Special Attack by two stages if it's the opposite gender.
80 80 80 80 80 80 Rock Slide Rock physical 10 75 90%

Has a 30% chance to make the target flinch.
82 82 Sleep Talk Normal status 10 — —

Randomly uses one of the user's other three moves. Only works if the user is sleeping.
83 83 Natural Gift Normal physical 15 * 100%

Power and type depend on the held berry.
87 87 87 87 87 87 Swagger Normal status 15 — 85%

Raises the target's Attack by two stages and confuses the target.
88 88 88 Sleep Talk Normal status 10 — —

Randomly uses one of the user's other three moves. Only works if the user is sleeping.
50 90 90 90 90 90 90 Substitute Normal status 10 — —

Transfers 1/4 of the user's max HP into a doll, protecting the user from further damage or status changes until it breaks.
H3 H3 H3 H3 H3 H3 94 Surf Water special 15 90 100%

Inflicts regular damage and can hit Dive users.
H6 H5 Whirlpool Water special 15 35 85%

Prevents the target from leaving battle and inflicts 1/16 its max HP in damage for 2-5 turns.
98 Waterfall Water physical 15 80 100%

Has a 20% chance to make the target flinch.
94 Secret Power Normal physical 20 70 100%

Has a 30% chance to inflict a status effect which depends upon the terrain.
H6 H6 H6 H6 94 94 Rock Smash Fighting physical 15 40 100%

Has a 50% chance to lower the target's Defense by one stage.
100 100 100 Confide Normal status 20 — —

Lowers the target's Special Attack by one stage.
H3 H3 H3 Surf Water special 15 90 100%

Inflicts regular damage and can hit Dive users.
H7 H7 H7 H7 H5 H5 H5 Waterfall Water physical 15 80 100%

Has a 20% chance to make the target flinch.
H8 H8 Rock Climb Normal physical 20 90 85%

Has a 20% chance to confuse the target.
H6 Rock Smash Fighting physical 15 40 100%

Has a 50% chance to lower the target's Defense by one stage.
H8 H8 H6 H7 Dive Water physical 10 80 100%

User dives underwater, dodging all attacks, and hits next turn.

External Links