Omastar
#139 in the Kanto Pokédex • Spiral Pokémon
Omastar in the National PokédexPokédex entries
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.
Pokémon details
Types


Category
Abilities
Height
Weight
National Pokédex
Kanto Pokédex
Omastar in Other Games
National Dex pageMin
Max
HP
70
250
344
Attack
60
112
240
Defense
125
229
383
Sp. Atk
115
211
361
Sp. Def
70
130
262
Speed
55
103
229
Total
495
Ranges are for Level 100. Max assumes a beneficial nature, 252 EVs, and 31 IVs; min assumes a hindering nature, 0 EVs, and 0 IVs.
Game availability
Available within the FireRed/LeafGreen pair. Depending on the species, acquisition can require the other version, the postgame, evolution, breeding, or an event ticket. Original GBA event tickets required historical distributions; Switch ticket access differs.
| EV yield | 2 Def |
|---|---|
| Catch rate | 45 |
| Base Exp. | 199 |
| Pokémon | Requires | Evolution |
|---|---|---|
![]() Omanyte #138 | Level 40 | ![]() Omastar #139 |
Evolution
Evolve Omanyte, revived from the Helix Fossil on Cinnabar Island, by raising it to level 40. Available only if you chose the Helix Fossil in Mt. Moon.
Swift Swim
Raises SPEED in rain.
Doubles Speed during rain.
Shell Armor
Blocks critical hits.
Protects against critical hits.

















































