Omastar

Rock Water

Omastar is a Rock and Water-type Pokémon with a Max CP of 3150 in Pokémon GO. Omastar's best moveset is Rock Throw and Rock Slide. It is weather boosted by Partly Cloudy and Rain weather, and it was originally found in the Kanto region. Shiny Omastar is available in Pokémon GO.

Omastar is weak to Grass, Electric, Fighting, and Ground-type moves. It takes reduced damage from Flying, Ice, Normal, Poison, and Fire-type moves.

Stats

Max CP	3150 CP
Attack	207 ATK
Defense	201 DEF
Stamina	172 STA
Weather Boost	Partly Cloudy Rain
Released	Yes
Shiny released	Yes
Buddy distance	5 km

Pokédex information

Pokédex Number	#139
Height	1 m
Weight	35 kg
Region	Kanto Generation 1
Can be traded	Allowed
Pokémon Home transfer	Allowed
Base Catch Rate	20%
Base Flee Rate	0%
Catch rewards	5 300
Additional Move Cost	75 75000

Omastar type chart

Takes increased damage

Grass	256.0%
Electric	160.0%
Fighting	160.0%
Ground	160.0%

Takes decreased damage

Fire	39.1%
Flying	62.5%
Ice	62.5%
Normal	62.5%
Poison	62.5%

Type chart shows the percentage (%) of damage taken from an incoming attack of a particular type.

Omastar's best moves and movesets

Omastar's best moveset is Rock Throw and Rock Slide, with 13.20 DPS (damage per second) and 370.1 TDO (total damage output). These moves are boosted by Partly Cloudy weather.You need an Elite Fast TM to teach Omastar Rock Throw. You need an Elite Charge TM to teach Omastar Rock Slide.

Best Omastar moves

Rock Throw *

Rock Slide *

DPS13.20

TDO370.07

Score25.9

Weather Boost

If you are unable to get Omastar with its best moveset, we recommend to use Water Gun/Rock Slide. You will lose around 1.9% DPS and TDO, which makes these moves a viable alternative to Omastar's strongest moveset (Rock Throw/Rock Slide).

Omastar moves comparison

The following chart shows Omastar's DPS and TDO for every fast and charge attack combination. This chart is useful for comparing the relative strength of Omastar's movesets. You can change the weather and the opposing Pokémon to see how it affects the rankings.

Opponent

#	Fast Attack	Charged Attack	DPS	TDO	Score 🔽
1.	Rock Throw *	Rock Slide *	13.20	370.1	25.9
2.	Rock Throw *	Hydro Pump	13.18	369.5	25.8
3.	Water Gun	Rock Slide *	12.95	362.9	25.4
4.	Water Gun	Hydro Pump	12.94	362.8	25.4
5.	Rock Throw *	Rock Blast	12.25	343.3	24.0
6.	Mud Shot	Rock Slide *	11.99	336.0	23.5
7.	Water Gun	Rock Blast	11.88	332.9	23.3
8.	Mud Shot	Hydro Pump	11.73	328.8	23.0
9.	Rock Throw *	Ancient Power	11.69	327.7	22.9
10.	Water Gun	Ancient Power	11.37	318.7	22.3
11.	Mud Shot	Rock Blast	10.92	306.2	21.4
12.	Mud Shot	Ancient Power	10.66	298.7	20.9

Fast Attacks

Mud Shot570.6s
Type effectiveness chart
160.0%
Poison
Rock
Steel
Fire
Electric
62.5%
Bug
Grass
39.1%
Flying
Gym and Raid Battles
Damage 5
Energy 7
Weather boost
Sunny
Duration 0.6s
Damage window 0.3s - 0.6s
Trainer Battles
Damage 3
Energy 9

Effects
Mud Shot has no special effects.
See Mud Shot details page ↗
Rock Throw *1270.9s
Type effectiveness chart
160.0%
Flying
Bug
Fire
Ice
62.5%
Fighting
Ground
Steel
Gym and Raid Battles
Damage 12
Energy 7
Weather boost
Partly Cloudy
Duration 0.9s
Damage window 0.5s - 0.8s
Trainer Battles
Damage 8
Energy 5

Effects
Rock Throw has no special effects.
See Rock Throw details page ↗
Water Gun550.5s
Type effectiveness chart
160.0%
Ground
Rock
Fire
62.5%
Water
Grass
Dragon
Gym and Raid Battles
Damage 5
Energy 5
Weather boost
Rain
Duration 0.5s
Damage window 0.3s - 0.5s
Trainer Battles
Damage 3
Energy 3

Effects
Water Gun has no special effects.
See Water Gun details page ↗

Damage	5
Energy	7
Weather boost	Sunny
Duration	0.6s
Damage window	0.3s - 0.6s

Damage	3
Energy	9

Damage	12
Energy	7
Weather boost	Partly Cloudy
Duration	0.9s
Damage window	0.5s - 0.8s

Damage	8
Energy	5

Damage	5
Energy	5
Weather boost	Rain
Duration	0.5s
Damage window	0.3s - 0.5s

Damage	3
Energy	3

Charged Moves

Ancient Power70333.5s
Type effectiveness chart
160.0%
Flying
Bug
Fire
Ice
62.5%
Fighting
Ground
Steel
Gym and Raid Battles
Damage 70
Energy 33
Weather boost
Partly Cloudy
Duration 3.5s
Damage window 2.9s - 3.1s
Trainer Battles
Damage 60
Energy 45

Effects
Special
Ancient Power has a 10.0% chance to:
Increase User's Attack by 25.0%
Increase User's Defense by 25.0%
See Ancient Power details page ↗
Rock Slide *80502.7s
Type effectiveness chart
160.0%
Flying
Bug
Fire
Ice
62.5%
Fighting
Ground
Steel
Gym and Raid Battles
Damage 80
Energy 50
Weather boost
Partly Cloudy
Duration 2.7s
Damage window 1.5s - 2.6s
Trainer Battles
Damage 75
Energy 45

Effects
Rock Slide has no special effects.
See Rock Slide details page ↗
Hydro Pump1301003.3s
Type effectiveness chart
160.0%
Ground
Rock
Fire
62.5%
Water
Grass
Dragon
Gym and Raid Battles
Damage 130
Energy 100
Weather boost
Rain
Duration 3.3s
Damage window 0.9s - 3.0s
Trainer Battles
Damage 130
Energy 75

Effects
Hydro Pump has no special effects.
See Hydro Pump details page ↗
Rock Blast50332.1s
Type effectiveness chart
160.0%
Flying
Bug
Fire
Ice
62.5%
Fighting
Ground
Steel
Gym and Raid Battles
Damage 50
Energy 33
Weather boost
Partly Cloudy
Duration 2.1s
Damage window 1.6s - 2.0s
Trainer Battles
Damage 50
Energy 40

Effects
Rock Blast has no special effects.
See Rock Blast details page ↗

Damage	70
Energy	33
Weather boost	Partly Cloudy
Duration	3.5s
Damage window	2.9s - 3.1s

Damage	60
Energy	45

Damage	80
Energy	50
Weather boost	Partly Cloudy
Duration	2.7s
Damage window	1.5s - 2.6s

Damage	75
Energy	45

Damage	130
Energy	100
Weather boost	Rain
Duration	3.3s
Damage window	0.9s - 3.0s

Damage	130
Energy	75

Damage	50
Energy	33
Weather boost	Partly Cloudy
Duration	2.1s
Damage window	1.6s - 2.0s

Damage	50
Energy	40

Legacy Elite Fast and Charge Attacks can only be obtained during special events, or by using an Elite Fast TM or an Elite Charge TM. Legacy moves are marked with an asterisk (*). The table above provides information on different moves Omastar has in Pokémon GO, along with their corresponding DPS (Damage per Second) and TDO (Total Damage Output).

Omastar Special CP Values

Max CP values in Raids, Eggs, Field Research

Omastar's Max CP is at Level 50. Omastar Combat Power values in Pokémon GO Raids, Eggs, and Field Research encounter can be found below.

Max CP	3150 CP
Max CP	Level 50, 15/15/15 IVs
Research	1138 CP - 1194 CP
Research	Level 15, 10/10/10 minimum IVs
Eggs	1517 CP - 1592 CP
Eggs	Level 20, 10/10/10 minimum IVs
Raids	1517 CP - 1592 CP
Raids	Level 20, 10/10/10 minimum IVs
RaidsWeather Boost Partly Cloudy Rain	1897 CP - 1990 CP
RaidsWeather Boost Partly Cloudy Rain	Weather boosted, Level 25, 10/10/10 minimum IVs

More information

Field and Special Research encounters are always Level 15. IVs range from 10 (min) to 15 (max). Field Research encounters have a 10/10/10 IV floor.
Pokémon hatched from Eggs are always Level 20. IVs range from 10 (min) to 15 (max). Egg Hatches have a 10/10/10 IV floor.
Raid Bosses caught without weather boost are always Level 20. IVs range from 10 (min) to 15 (max). Raid Catches have a 10/10/10 IV floor.
- 😈 Shadow Pokémon have 6/6/6 IV floor in raids.
Raid Bosses caught with weather boost are always Level 25. IVs range from 10 (min) to 15 (max). Weather boosted Raid Catches have a 10/10/10 IV floor.
- 😈 Shadow Pokémon have 6/6/6 IV floor in raids.
Wild encounters range from Level 1 to Level 30 Pokémon. Their IVs range from 0 (min) to 15 (max) for each stat.
Weather Boosted wild Pokémon encounters get a 5 Level boost, bringing their Level range to Level 6 to Level 35. In addition, they have a guaraneed minimum IV value of 4 for each stat, resulting in a 4/4/4 IV floor.

Omastar Max CP Chart

Max Combat Power per Level chart

Omastar Max CP per level chart. This table shows maximum Combat Power values from Level 1 to Level 50.

LVL	CP	LVL	CP	LVL	CP
1	39 CP	2	123 CP	3	207 CP
4	291 CP	5	375 CP	6	459 CP
7	544 CP	8	628 CP	9	712 CP
10	796 CP	11	876 CP	12	955 CP
13	1035 CP	14	1114 CP	15	1194 CP
16	1273 CP	17	1353 CP	18	1433 CP
19	1512 CP	20	1592 CP	21	1671 CP
22	1751 CP	23	1831 CP	24	1910 CP
25	1990 CP	26	2070 CP	27	2149 CP
28	2229 CP	29	2309 CP	30	2388 CP
31	2428 CP	32	2468 CP	33	2508 CP
34	2547 CP	35	2587 CP	36	2627 CP
37	2667 CP	38	2707 CP	39	2746 CP
40	2786 CP	41	2822 CP	42	2857 CP
43	2893 CP	44	2929 CP	45	2965 CP
46	3002 CP	47	3038 CP	48	3075 CP
49	3113 CP	50	3150 CP

Omastar evolution chart

Pokémon	Requires	Evolution
Omanyte	50 Candy	Omastar

Omanyte evolves into Omastar which costs 50 Candy.

Regular and Shiny Omastar

Mega Pokémon that boost Omastar

A list of Mega Pokémon that boost Omastar's Rock and Water-type moves, Candy, and Candy XL from catching Omastar.

More information

Mega and Primal Raid Bonus –Mega Pokémon boost the attack power of all other Pokémon when battling in Raid Battles by 10%. Attacks that share their type with the Mega Pokémon's type(s) receive a 30% boost. However, these bonuses do not stack if there are multiple Mega-Evolved Pokémon battling simultaneously; only the higher boost will be applied.

Mega and Primal Catch Bonus –While a Pokémon is Mega-Evolved, additional XP and Candy is granted when catching a Pokémon that shares a type with it, or for any raid boss caught. These do not stack with each other. Additionally, High and Max Level Mega-Evolved Pokémon grant an increased chance to obtain Candy XL when catching a Pokémon that shares a type with it.

Note on Primal Kyogre and Groudon

Primal Kyogre boosts Water-, Electric- and Bug-type attacks and Pokémon.
Primal Groudon boosts Fire-, Grass- and Ground-type attacks and Pokémon.

Omastar Catch Rates

The base catch rate for Omastar in Pokémon GO is 24.03%, calculated for catching a Level 20 with no berries. Curved Great throw has a 50.38% chance to catch, and adding a Razz Berry raises that to 65.04%.

Configure

		Normal	Nice	Great	Excellent
No Berry	-	24.03%	27.09%	33.78%	39.85%
No Berry	Curve	37.32%	41.56%	50.38%	57.86%
Razz Berry	-	33.78%	37.75%	46.11%	53.35%
Razz Berry	Curve	50.38%	55.33%	65.04%	72.65%
Silver Pinap Berry	-	39.02%	43.38%	52.38%	59.95%
Silver Pinap Berry	Curve	56.87%	61.98%	71.67%	78.89%
Golden Razz Berry	-	49.69%	54.62%	64.32%	71.94%
Golden Razz Berry	Curve	68.90%	73.89%	82.65%	88.47%

More information

Catch probability with multiple throws

In order to help Trainers understand their overall odds when catching Omastar, we enable the functionality to showing the total chance to catch it depending on the number of available throws. We calculate this chance as if you repeated the same throw N-number of times.

To activate this functionality, change the number of Number of throws to a value greater than 1. The Number of throws option is available in the configuration options above the chart

Catch rate formula

Pokémon GO catch rate formula can be expressed as follows:

CATCH_MULTIPLIERS = ball * curve * berry * throwType * (type1Medal + type2Medal / 2)
CATCH_RATE = 1 - Math.pow(1 - baseCatchRate / (2 * cpm), CATCH_MULTIPLIERS)

There are different multipliers that come into play when calculating catch rate.

Curved throws are more effective than regular throws, stronger types of Poké Ball have a higher catch rate, and using a Razz Berry or a Golden Razz Berry also improves your chances.

Catch rate multipliers

The following table shows all the different catch rate multipliers in Pokémon GO:

Multiplier	Amount
Razz Berry	1.5
Silver Pinap Berry	1.8
Golden Razz Berry	2.5
Curveball	1.7
Nice Throw	1.15
Great Throw	1.5
Excellent Throw	1.85
PokéBall	1.0
Premier Ball	1.0
Great Ball	1.5
Ultra Ball	2.0
Bronze medal	1.1
Silver medal	1.2
Gold medal	1.3

Omastar family

A list of Pokémon that are somehow related to Omastar in Pokémon GO. Includes evolutions, regional, and form variations.

List of Omastar costumes

A list of Omastar costumes available in Pokémon GO.

Omastar high resolution sprites

A list of high resolution Pokémon HOME sprites related to Omastar. Sprite description is a best guess on what the sprite is related to, use your own judgment. Click to download full 512x512 resolution.

Omastar Pokédex entries

Versions	Pokédex entry
Red, Blue	A prehistoric POKéMON that died out when its heavy shell made it impossible to catch prey.
Yellow	Sharp beaks ring its mouth. Its shell was too big for it to move freely, so it became extinct.
Gold	Apparently, it cracked SHELLDER's shell with its sharp fangs and sucked out the insides.
Silver	Once wrapped around its prey, it never lets go. It eats the prey by tearing at it with sharp fangs.
Crystal	Its heavy shell allowed it to reach only nearby food. This could be the reason it is extinct.
Ruby, 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.
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.
FireRed	Its tentacles are highly developed as if they are hands and feet. As soon as it ensnares prey, it bites.
LeafGreen	Despite having strong fangs and tentacles, it went extinct when its heavy shell made it unable to catch prey.
Diamond, Pearl, Platinum, Black, White, Black 2, White 2	It is thought that this Pokémon became extinct because its spiral shell grew too large.
HeartGold	Apparently, it cracked SHELLDER’s shell with its sharp fangs and sucked out the insides.
SoulSilver	Once wrapped around its prey, it never lets go. It eats the prey by tearing at it with sharp fangs.
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	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.
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.
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.
Let's Go, Pikachu!, Let's Go, Eevee!	Its sharp beak rings its mouth. Its shell was too big for it to move freely, so it became extinct.
Sword	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.
Shield	Omastar’s sharp fangs could crush rock, but the Pokémon can attack only the prey that come within reach of its tentacles.