That 4x Grass weakness is something every Omastar user needs to plan around. Swift Swim doubles its Speed in rain, which helps. 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.
Omastar uses its tentacles to capture its prey. It is believed to have become extinct because its shell grew too large and heavy, causing its movements to become too slow and ponderous.
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.
Evolved from Omanyte. Omastar is the final form in this two-stage line. No compatible partners 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 from the Water1 and Water3 egg groups. Notable egg moves include Aurora Beam, Bide, Bubble Beam and 11 more.
White Herb and Swiftswim form the backbone. Omastar invests max Sp. Atk and Speed EVs to play its special attacker role properly, and Modest nature pushes Sp. Atk higher. Surf handles the heavy lifting on offense. The remaining moves rounds it out.
Best Build
Best Omastar Moveset
- Shell Smash
- Ice Beam
- Surf
- Earth Power
Recommended Teammates
You'll want to breed for Aurora Beam and Bide on Omastar. These egg moves aren't just nice to have. Combined with STAB from Hydro Pump and Stone Edge, they expand what Omastar can actually threaten in practice.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
Can't catch Omastar directly. Start with Omanyte at moderate rates from the locations below, then evolve at level 40. The 2-stage line from Omanyte to Omastar is where the leveling time goes.
How to Obtain Omastar in Omega Ruby & Alpha Sapphire
Step 1Catch OmanyteRustboro City - Devon CorporationOmega RubyGift from NPCLv.20MidCityOne-timeRevive Helix FossilRustboro City - Devon CorporationAlpha SapphireGift from NPCLv.20MidCityOne-timeRevive Helix Fossil
Step 2Omastar ✓
Swift Swim changes the entire equation for Omastar. The 495 BST doesn't tell the full story. Ranked C-Tier as a wallbreaker.
Omanyte evolves into Omastar at level 40. Omastar is the fully evolved form. At 495 BST, it's got solid stats to work with.
Swift Swim is what you want on Omastar. Every competitive set worth running is built with that ability in mind. The alternatives (Shell Armor, Weak Armor) work on paper but Swift Swim is what makes Omastar worth using. On wall sets, Swift Swim pairs with Omastar's base 125 Defense to absorb physical hits on the switch.
At base 55 Speed, it won't be moving first often. On offense, Omastar is a special attacker with base 115 Sp. Atk. Defensively? Enough bulk to take a hit or two. Best used as a wallbreaker.
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