That 4x Grass weakness is something every Omastar user needs to plan around. Known as the Spiral Pokemon. The stat spread leans into special offense.
Defense and Sp. Atk carry most of Omastar's stat budget. Speed's the obvious dump stat. Tough to catch and yields 2 Defense EVs. Follows a medium-fast 1M XP curve.
Apparently, it cracked SHELLDER’s shell with its sharp fangs and sucked out the insides.
Once wrapped around its prey, it never lets go. It eats the prey by tearing at it with sharp fangs.
Omastar Weakness
VulnerableOmastar's Rock/Water typing leaves it vulnerable to Grass, Electric, Fighting, and Ground moves. Grass hits land at 4x, so they're the biggest threat. 5 resistances help offset the weaknesses. Omastar's physical bulk (base 125 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
- Special stat split into Sp.Atk and Sp.Def
Evolved from Omanyte. Omastar is the final form in this two-stage line. A decent partner pool for breeding via two egg groups. Eggs are slow to hatch. HP grew the most through evolution (+35 over Omanyte), and Omastar peaks at 495 total stats.
How to Evolve
Breed with Omastar to get Omanyte eggs using 37 partners from the Water1 and Water3 egg groups. Notable egg moves include Aurora Beam, Bubble Beam, Haze and 2 more.
Leftovers and an ability form the backbone. Omastar invests flexible EVs EVs to play its attacker role properly, and a nature nature pushes higher. Hydro Pump handles the heavy lifting on offense. Utility options rounds it out.
Best Build
Best Omastar Moveset
- Hydro Pump
- Ice Beam
- Reflect
- Rain Dance
Recommended Teammates
You'll want to breed for Aurora Beam and Bubble Beam on Omastar. These egg moves aren't just nice to have. Combined with STAB from Hydro Pump and Surf, they expand what Omastar can actually threaten in practice.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Omastar can't be caught in Gold & Silver. Transfer Omanyte from Red, Yellow, or Sword and evolve through the 2-stage line to get it. The step cards below map the full chain.
Swift Swim changes the entire equation for Omastar. The 495 BST doesn't tell the full story. Ranked C-Tier as a support.
Omanyte evolves into Omastar at level 40. Omastar is the fully evolved form. At 495 BST, it's got solid stats to work with.
At base 55 Speed, it won't be moving first often. On offense, Omastar is leaning toward the special side (base 115 Sp. Atk). Defensively? Enough bulk to take a hit or two. Best used as a support.
Omastar appears in 19 games, including Yellow, Red & Blue, and Gold & Silver.
One of the original 151, Omastar has appeared in 19 games — most mainline games. From Red & Blue through the latest titles, it's rarely been left out of a regional Pokedex.
- Gen IY
Yellow - Gen IRBDebut

Red & Blue - Gen IIGS

Gold & Silver - Gen IIC
Crystal - Gen IIIRS

Ruby & Sapphire - Gen IIIFRLG

FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS

HeartGold & SoulSilver - Gen IVDP

Diamond & Pearl - Gen VBW

Black & White - Gen VB2W2

Black 2 & White 2 - Gen VIXY

X & Y - Gen VIORAS

Omega Ruby & Alpha Sapphire - Gen VIIUSUM

Ultra Sun & Ultra Moon - Gen VIISM

Sun & Moon - Gen VIILGPE

Let's Go Pikachu & Eevee - Gen VIIISwSh

Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP

Brilliant Diamond & Shining Pearl - Gen IXSV

Scarlet & Violet - Gen IXLZA
Legends: Z-A
