PokeBonk Omastar: Rock/Water final form

Updated October 23, 2026

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#139Omastar

RockWater

Stage 2 of 2

Base stats

Change compared with Omanyte

HP: 70; +35
Attack: 60; +20
Defense: 125; +25
Sp. Atk: 115; +25
Sp. Def: 70; +15
Speed: 55; +20
Total: 495; +140

Ultimate by evolution stage

Tier 1 · OmanyteAbyssal ShellA spiral of fossil shells and rocks bursts out around you, traps whatever it touches and ends in a geyser.
Tier 2 · OmastarThis formSpike StormThe spiral, Omastar's tentacles drag in the horde and sixteen shell spikes rain from the sky.

Evolution line

Omanyte
OmastarLv. 40

Evolution levels are worked out from the game code and have not been play-tested.

League family

Role: Spiral fossil

Passive: Spiral Shell — +20 armor. Your Rock and Water attacks deal +15% damage. Every 5 s, a ring of rocks bursts from your shell (5 m; Omastar 6.5 m).

Starting moves:

ConstrictNormal
Spike CannonNormal
Water SpoutWater
Meteor BeamRock

Unlock challenge

The challenge belongs to the Omanyte family.

Have 25 members in your League.
Get 50,000 KOs in the Rocky Desert.

Unlock challenges for every family

Damage taken by attack type

More damage from

Grass×1.6max
Fighting×1.35
Ground×1.35
Electric×1.35
Steel×1.08
Water×1.08

Normal damage from

Rock×1
Bug×1
Ghost×1
Psychic×1
Dragon×1
Dark×1
Fairy×1

Less damage from

Normal×0.8
Flying×0.8
Poison×0.8
Ice×0.8
Fire×0.64

Damage you take is limited to between ×0.5 and ×1.6, so these numbers can differ from the attack values on the type chart.

Data as of game version 0.8.18, read from the game's files (not play-tested).

PokeBonk Omastar (No. 139, Rock/Water) is the final form of the Omanyte line, reached when Omanyte evolves. This page covers its stats, Ultimate, passive, starting moves, unlock challenge and damage taken by type, read from the game files of version 0.8.18. PokeBonk.gg is an unofficial fan site, and the game itself is at pokebonk.com.

How to play the Omanyte line

Omanyte’s line is the Spiral fossil, and it evolves at a set level: the game’s League data puts Omastar at level 40. Its passive, Spiral Shell, gives +20 armor, makes Rock and Water attacks deal +15% damage, and every 5 s bursts a ring of rocks from your shell (5 m, 6.5 m as Omastar). The kit is Constrict and Spike Cannon (Normal), Water Spout (Water) and Meteor Beam (Rock). Abyssal Shell spirals fossil shells and rocks around you, trapping what they touch, and ends in a geyser. As Omastar it becomes Spike Storm, with tentacles that drag the horde in and sixteen shell spikes from the sky. To join it, have 25 League members and get 50,000 KOs in the Rocky Desert. It suits patient tanks.

What changes from Omanyte to Omastar

Compared with Omanyte:

Base stat total: 355 → 495 (+140).
Biggest gains: HP +35 and Defense +25.
Types stay Rock/Water, so damage taken by type is unchanged.
Ultimate: tier 1 Abyssal Shell → tier 2 Spike Storm.
The family passive Spiral Shell and the starting moves stay the same.

Omastar is the final form of the Omanyte line.

Pokémon of the same type

All 151 Pokémon in the Pokédex Unlock challenges for every family Type chart

Frequently asked questions

What is Omastar weak to in PokeBonk?

Grass deal the most damage to Omastar: ×1.6. The least comes from Fire: ×0.64. Damage you take is limited to between ×0.5 and ×1.6.

What Ultimate does Omastar use in PokeBonk?

Omastar uses Spike Storm, tier 2 of 2 in the Omanyte line: The spiral, Omastar's tentacles drag in the horde and sixteen shell spikes rain from the sky.

How do I unlock Omastar in PokeBonk?

Omastar comes from Omanyte evolving during a run. The League challenge of the Omanyte line: “Have 25 members in your League” and “Get 50,000 KOs in the Rocky Desert”