Answer · verified 2026-09-26

Omastar FAQ · type, weaknesses, evolution, stats

TL;DR. Omastar (#0139) is a rock/water-type Pokémon from Generation 1 (Kanto). The Spiral Pokémon. A prehistoric POKéMON that died out when its heavy shell made it impossible to catch prey.

Omastar
Rock Water

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

Pokédex #0139 Gen 1 · Kanto Spiral Pokémon

What type is Omastar?

Omastar is a Rock/Water-type Pokémon. Dual-typing stacks weaknesses and resistances. see the full matchup table below.

What is Omastar weak to?

Omastar takes 4× damage from Grass. its biggest defensive liability. It also takes 2× damage from Electric, Fighting, Ground.

What is Omastar resistant to?

Omastar resists Normal, Ice, Poison, Flying, Fire. It has no full immunities.

How does Omastar evolve?

Omastar evolves from Omanyte (Level 40). Omastar is the final form of its evolution line.

What generation is Omastar from?

Omastar was introduced in Generation I (the Kanto region). Its Pokédex number is #0139.

What are Omastar's base stats?

Omastar has HP 70, Attack 60, Defense 125, Special Attack 115, Special Defense 70, and Speed 55. Total base stat total: 495.

What are Omastar's abilities?

Omastar can have the abilities Swift Swim, Shell Armor, plus the Hidden Ability Weak Armor.

Is Omastar legendary or mythical?

No. Omastar is a regular Pokémon, not classified as Legendary or Mythical.