How to Beat Omastar

If you are looking for the best ways to defeat Omastar in Pokemon Go, you've come to the right place! This guide will teach you how to successfully win battles against Omastar by exploiting its Type weakness(es).

In addition, it is equally as important to choose the optimal Pokemon and Movesets to take advantage of those weaknesses. This will allow you to to deal maximum damage during battle and defeat Omastar quickly and easily.
How to Beat Omastar
To defeat Omastar in Pokemon Go you must take advantage of its Type Weakness(es). Being a Rock/Water Type, Omastar is vulnerable against Electric, Grass, Ground and Fighting Type Moves.

This guide lists the best Pokemon and best Movesets you should use in order to defeat Omastar as effectively and as efficiently as possible.
Before we get into the details of this guide, please see below. The following is a simple step by step guide/checklist on how to defeat Omastar. If you would like more information surrounding terminology, specific Pokemon, Movesets, DPS, etc. feel free to check out the rest of this guide.
5 Simple Tips to Defeat Omastar
Tip #1. CP (Combat Power) Advantage
Choose Pokemon with equal or higher CP than that of the Omastar you are battling. If your CP advantage is high enough, the next steps will not be as important in battle. Omastar can have up to a maximum of 2685 CP.
Tip #2. Use Move Types Omastar is Weak Against
Taking advantage of the Type Weakness(es) of Omastar will allow you to deal more damage during battle. Omastar is weak against the following Types:
Tip #3. Use Pokemon & Moves of the Same Type for Additional Damage
For example, Bulbasaur using a Grass Move, Charmander using a Fire Move or Squirtle using a Water Move will deal 25% more damage simply because the Pokemon is the same Type as the Move it is using. You can find out more about damage mechanics at the end of this page.
Tip #4. Choose the Best Type(s) of Pokemon
Dealing additional damage, while taking reduced damage is important in defeating Omastar. Avoid using Types of Pokemon Omastar Moves are Super Effective against, instead try to use Types of Pokemon of which Omastar Moves are Not Very Effective against.
MoveXOmastar Moves are Super Effective Against
Mud Shot
Water Gun
Ancient Power
Hydro Pump
Rock Slide
MoveOmastar Moves Not Very Effective Against
Mud Shot
Water Gun
Ancient Power
Hydro Pump
Rock Slide
Tip #5. Use High DPS Movesets for Max Damage
Taking advantage of the Type Weakness(es) of Omastar and the STAB (Same Type Attack Bonus) of your own Pokemon will allow you to deal a great amount of damage during battle. Omastar will go down quickly if the optimal Pokemon & Movesets are used.

You can learn more about high damage Movesets at the end of this guide: Section IV. Best Pokemon & Movesets to use against Omastar in battle.
Thank you for reading. If you would like further or more detailed information on how to defeat Omastar please continue reading the rest of this guide. If you have questions, comments, or tips of your own, feel free to leave a message in the comment section at the end of this guide!
I. Omastar Type Weaknesses
To defeat Omastar you must first learn its Type weaknesses. Using specific Types of Moves that Omastar is weak against will result in those Moves dealing Super Effective damage (25% damage bonus).
Omastar is a Rock/Water Type Pokemon, which means it is weak against the following Move Type(s) and will be vulnerable to the following damage multipliers:
II. Utilizing Benefit of Super Effective Moves
Next we must identify Moves of the above Types. This is important as Moves that are Super Effective deal 25% additional damage. If a Pokemon has a double weakness, the Move will deal 56% additional damage.
In order to defeat Omastar you will want to choose a Pokemon with Move Types Omastar is vulnerable against. The moves of these types are shown below:
Move NameFast/
DischargeCharge Electric352.50-3314.00
SparkFast Electric70.70410.00
ThunderCharge Electric1004.30-10023.26
Thunder PunchCharge Electric402.40-3316.67
Thunder ShockFast Electric50.6078.33
ThunderboltCharge Electric552.70-5020.37
Move NameFast/
Leaf BladeCharge Grass552.80-5019.64
Petal BlizzardCharge Grass653.20-5020.31
Power WhipCharge Grass702.80-10025.00
Razor LeafFast Grass151.45710.34
Seed BombCharge Grass402.40-3316.67
Solar BeamCharge Grass1204.90-10024.49
Vine WhipFast Grass70.65710.77
Move NameFast/
Bone ClubCharge Ground251.60-2515.63
BulldozeCharge Ground353.40-2510.29
DigCharge Ground705.80-3312.07
Drill RunCharge Ground503.40-3314.71
EarthquakeCharge Ground1004.20-10023.81
Mud BombCharge Ground302.60-2511.54
Mud ShotFast Ground60.55710.91
Mud SlapFast Ground151.35911.11
Move NameFast/
Brick BreakCharge Fighting301.60-3318.75
Cross ChopCharge Fighting602.00-10030.00
Karate ChopFast Fighting60.8077.50
Low KickFast Fighting50.6078.33
Low SweepCharge Fighting302.25-2513.33
Rock SmashFast Fighting151.41710.64
SubmissionCharge Fighting302.10-3314.29
III. Pokemon Weakness(es) vs. Omastar
Before we go any further, please take a minute to consider the following. Most of this guide is focused on dealing high amounts of damage in a short period of time, in order to beat Omastar as quickly as possible.

However, it is important to note that defensive Type weaknesses play an important role in Pokemon Go battles as well.
First off, Omastar can deal a great amount of damage using Water Gun and Hydro Pump. This is especially true if you are using Pokemon that are weak against these Move Type(s). The damage per second and ranking of this moveset is shown below.
High DPS Moveset for Omastar:
Move:Water GunHydro Pump
Move Type:WaterWater
Category:Fast Charge
Rank (DPS):#34#38
DPS (w/ STAB):15.029.6
Rank (w/ STAB):#4#13
Omastar is capable of using the following Moves:
Omastar Fast Moves:Omastar Charge Moves:
Mud ShotWater GunAncient PowerHydro PumpRock Slide
Sec:0.55 sec0.5 secSec:3.6 sec3.8 sec3.2 sec
While Water Gun and Hydro Pump is a strong Moveset, most of Omastar's Moves will deal additional damage if used against certain Types of Pokemon as they will take increased damage from Omastar. Depending on the particular Moveset of the Omastar you are battling against, you will want to try and avoid using Pokemon of the following Types.
MoveXOmastar Moves are Super Effective Against
Mud Shot
Water Gun
Ancient Power
Hydro Pump
Rock Slide
On the other hand, there are certain Types of Pokemon in Pokemon Go, that will take less damage from the Moves of Omastar. Therefore, to survive longer during Gym battles you will want to try and use Pokemon of the below Types when battling against Omastar.
MoveOmastar Moves are Not Very Effective Against
Mud Shot
Water Gun
Ancient Power
Hydro Pump
Rock Slide
It is important to note that this is not the only factor in choosing the optimal Pokemon to defeat Omastar. If you have a Pokemon with much higher CP and a high damage Moveset vs. Omastar you will obviously want to use that Pokemon. You will be able to win the battle quickly before your opponent has even had a chance to deal much damage.

However, if you are using a Pokemon with average CP and an average moveset, choosing the right Type of Pokemon becomes much more important.
IV. Benefits of Type Weakness & STAB Damage
Getting back to the offensive side of battling, the next step is to identify which Pokemon have the capability of using Super Effective Moves against Omastar.

Furthermore, we must identify Pokemon that are the same Type as the Moves they are using. This will result in an added 25% additional damage bonus, commonly referred to as STAB (Same Type Attack Bonus).
If you are new to Pokemon Go or to the damage mechanics in general, be sure to review the chart below before making your way to Section V. (Best Pokemon Movesets vs. Omastar). It explains how Pokemon Go DB determines the best damage Moveset/Pokemon to beat Omastar.
The following chart explains the terms used in this guide:
Battle Mechanics Terminology (Quick Reference Guide)
DPSDPS stands for Damage per Second. The DPS of each Move is calculated by taking the Power of a Move and dividing it by the time (seconds) it takes to actually perform the move (also known as a cooldown).
STABSTAB stands for Same Type Attack Bonus. When a Pokemon uses a Move that is the same Type as itself that Move will deal additional bonus damage. For example, if a Rock Type Pokemon uses a Rock Type Move it will deal 25% more damage.
Best Fast MoveThe Best Fast Move is calculated by taking the highest DPS Fast Move a Pokemon is capable of using. This includes the 25% STAB bonus. Generally every Pokemon in Pokemon Go will have one of two possible Fast Moves.
Best Charge MoveThe Best Charge Move is calculated by taking the highest DPS Charge Move a Pokemon is capable of using. This includes the 25% STAB bonus. Generally every Pokemon in Pokemon Go will have one of three possible Charge Moves.
Best Fast Move DPS vs. OmastarBest Fast Move DPS vs. Omastar is calculated by taking the Best Fast Move DPS w/ STAB and multiplying that DPS by 1.25 if Omastar has a single weakness to that Type or multiplying that DPS by 1.56 if Omastar has a double weakness to that Type.
Best Charge Move DPS vs. OmastarBest Charge Move DPS vs. Omastar is calculated by taking the Best Charge Move DPS w/ STAB and multiplying that DPS by 1.25 if Omastar has a single weakness to that Type or multiplying that DPS by 1.56 if Omastar has a double weakness to that Type.
Average DPSAverage DPS is simply the average of the Best Fast Move DPS vs. Omastar and the Best Charge Move DPS vs. Omastar. The chart is then sorted by highest Average DPS to lowest.
V. Best Pokemon & Movesets to use against Omastar in battle.
The following chart lists the top Pokemon/Moveset against Omastar. The list is sorted by highest Average Damage per Second to lowest. Type Effectiveness and STAB play a big role in increasing the damage that is done to Omastar. If you follow every step in this guide, you will have a much easier time defeating Omastar. Good Luck!
Best Pokemon Movesets vs. Omastar
PicNameBest Fast MoveBest Charge MoveFast Move TypeCharge Move TypeBest Fast Move DPS vs. OmastarBest Charge Move DPS vs. OmastarAverage DPS
IvysaurVine WhipPower WhipGrassGrass21.048.834.9
BellsproutVine WhipPower WhipGrassGrass21.048.834.9
TangelaVine WhipPower WhipGrassGrass21.048.834.9
WeepinbellRazor LeafPower WhipGrassGrass20.248.834.5
VenusaurVine WhipSolar BeamGrassGrass21.047.834.4
VileplumeRazor LeafSolar BeamGrassGrass20.247.834.0
VictreebelRazor LeafSolar BeamGrassGrass20.247.834.0
ExeggutorZen HeadbuttSolar BeamPsychicGrass14.347.831.0
ParasectBug BiteSolar BeamBugGrass13.947.830.8
PrimeapeLow KickCross ChopFightingFighting13.046.929.9
MachopLow KickCross ChopFightingFighting13.046.929.9
MachokeLow KickCross ChopFightingFighting13.046.929.9
GloomRazor LeafPetal BlizzardGrassGrass20.239.629.9
MankeyScratchCross ChopNormalFighting12.046.929.4
MachampKarate ChopCross ChopFightingFighting11.746.929.3
DugtrioMud SlapEarthquakeGroundGround17.437.227.3
GolemMud SlapEarthquakeGroundGround17.437.227.3
MarowakMud SlapEarthquakeGroundGround17.437.227.3
RhydonMud SlapEarthquakeGroundGround17.437.227.3
SandslashMud ShotEarthquakeGroundGround17.037.227.1
OddishRazor LeafSeed BombGrassGrass20.232.526.3
PsyduckWater GunCross ChopWaterFighting15.037.526.3
NidoqueenPoison JabEarthquakePoisonGround14.337.225.7
NidokingPoison JabEarthquakePoisonGround14.337.225.7
LickitungZen HeadbuttPower WhipPsychicGrass11.439.025.2
GravelerMud SlapStone EdgeGroundRock17.432.324.8
PikachuThunder ShockThunderElectricElectric13.036.324.7
ElectabuzzThunder ShockThunderElectricElectric13.036.324.7
JolteonThunder ShockThunderElectricElectric13.036.324.7
ZapdosThunder ShockThunderElectricElectric13.036.324.7
JigglypuffPoundBody SlamNormalNormal16.232.124.1
MeowthScratchBody SlamNormalNormal15.032.123.5
ParasBug BiteSeed BombBugGrass13.932.523.2
PidgeotWing AttackHurricaneFlyingFlying15.031.323.1
WigglytuffPoundHyper BeamNormalNormal16.230.023.1
ChanseyPoundHyper BeamNormalNormal16.230.023.1
DewgongFrost BreathBlizzardIceIce13.932.123.0
CloysterFrost BreathBlizzardIceIce13.932.123.0
LaprasFrost BreathBlizzardIceIce13.932.123.0
ArticunoFrost BreathBlizzardIceIce13.932.123.0
HitmonleeRock SmashBrick BreakFightingFighting16.629.323.0
KabutopsMud ShotStone EdgeGroundRock13.632.322.9
RattataTackleBody SlamNormalNormal13.632.122.8
EeveeTackleBody SlamNormalNormal13.632.122.8
CharizardWing AttackFire BlastFlyingFire15.030.522.7
ArcanineFire FangFire BlastFireFire14.930.522.7
ExeggcuteConfusionSeed BombPsychicGrass12.432.522.5
WartortleWater GunHydro PumpWaterWater15.029.622.3
BlastoiseWater GunHydro PumpWaterWater15.029.622.3
GolduckWater GunHydro PumpWaterWater15.029.622.3
SeadraWater GunHydro PumpWaterWater15.029.622.3
StarmieWater GunHydro PumpWaterWater15.029.622.3
VaporeonWater GunHydro PumpWaterWater15.029.622.3
OmastarWater GunHydro PumpWaterWater15.029.622.3
Farfetch'dCutLeaf BladeNormalGrass13.330.622.0
TentacruelPoison JabHydro PumpPoisonWater14.329.621.9
KangaskhanMud SlapEarthquakeGroundGround13.929.821.8
SnorlaxZen HeadbuttBody SlamPsychicNormal11.432.121.7
OnixRock ThrowStone EdgeRockRock11.032.321.6
PoliwrathMud ShotHydro PumpGroundWater13.629.621.6
NinetalesEmberFire BlastFireFire11.930.521.2
PonytaEmberFire BlastFireFire11.930.521.2
RapidashEmberFire BlastFireFire11.930.521.2
MagmarEmberFire BlastFireFire11.930.521.2
FlareonEmberFire BlastFireFire11.930.521.2
MoltresEmberFire BlastFireFire11.930.521.2
DragoniteDragon BreathDragon ClawDragonDragon15.027.321.2
RaticateBiteHyper BeamDarkNormal12.030.021.0
CuboneMud SlapBone ClubGroundGround17.424.420.9
GyaradosBiteHydro PumpDarkWater12.029.620.8
MukPoison JabGunk ShotPoisonPoison14.327.120.7
HaunterShadow ClawSludge BombGhostPoison14.526.420.5
GengarShadow ClawSludge BombGhostPoison14.526.420.5
BeedrillPoison JabSludge BombPoisonPoison14.326.420.4
NidorinoPoison JabSludge BombPoisonPoison14.326.420.4
GrimerPoison JabSludge BombPoisonPoison14.326.420.4
EkansPoison StingGunk ShotPoisonPoison12.927.120.0
AlakazamPsycho CutPsychicPsychicPsychic15.424.620.0
MewtwoPsycho CutPsychicPsychicPsychic15.424.620.0

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