Ground moves don't affect Yanmega at all — that's the advantage of Bug/Flying typing. Speed Boost raises its Speed every turn it stays in. Known as the Ogre Darner Pokemon. The stat spread leans into special offense.
The stat budget goes to damage. Sp. Atk and Speed carry the offense, Sp. Def doesn't even come close. An Ogre Darner Pokemon on a medium-fast 1M XP curve, worth 2 Attack EVs per KO.
Extremely violent. When hunting, it wastes none of its energy, aiming only for prey’s most vulnerable spots. Any who manage to tame this Pokémon must be of incredible bravery.
Yanmega Weakness
VulnerableRock, Fire, Electric, Ice, and Flying-type moves hit Yanmega for super-effective damage. Rock hits land at 4x, so they're the biggest threat. The upside? Ground-type moves can't touch it at all. Yanmega's physical bulk (base 86 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
Getting Yanmega requires knowing a specific move, not just grinding levels. The chain starts at Yanma. Breed this form to get Yanma eggs (average hatch time). Defense grew the most through evolution (+41 over Yanma), and Yanmega peaks at 515 total stats.
How to Evolve
Start with max Sp. Atk and Speed EVs. Modest nature gives Yanmega the right special lean, Life Orb adds extra damage on every hit for a health trade, and Speed Boost works in the background. Bugbuzz is the main damage option.
Best Build
Legends: Arceus uses different battle mechanics.
Competitive build content is not applicable for this game. Select a main series game for builds.
A solid spread overall. Yanmega gets Bug Buzz and Leech Life for same-type damage alongside Normal and Rock coverage and more. It won't blow anyone away, but it doesn't leave you stuck either.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
decent spawn rates across 2 locations for Yanmega in mid-game routes. Scroll the sorted list below and pick whichever spot sits closest to your current route. The rate differences between locations are worth comparing.
Where To Catch Yanmega in Legends: Arceus
The path to Yanmega starts with Yanma at walking via walking encounters. 2 catchable stages total, with locations listed for each one below.
Step 1Catch YanmaEASYDroning MeadowGrassUncommonEASYGapejaw BogGrassUncommonSwampEASYHeavenward LookoutGrassUncommonEASYUrsa's RingGrassUncommon
Step 2Yanmega ✓EASYDroning MeadowGrassUncommonEASYHeavenward LookoutGrassUncommonor evolve from Yanma (Step 1)
Speed Boost changes the entire equation for Yanmega. The 515 BST doesn't tell the full story. Ranked C-Tier as a wallbreaker.
Watch for Aerodactyl (Rock), Arcanine (Fire), and Manectric (Electric) when using Yanmega. They all hit it super-effectively with STAB. Aerodactyl is the most dangerous since Rock moves deal 4x damage. Ice and Flying-type attackers are also a problem. With 5 weakness types, most competitive teams carry at least one counter.
Yanma evolves into Yanmega after learning Ancient Power. Yanmega is the fully evolved form. At 515 BST, it's got solid stats to work with.
Speed Boost is what you want on Yanmega. Every competitive set worth running is built with that ability in mind. The alternatives (Tinted Lens, Frisk) work on paper but Speed Boost is what makes Yanmega worth using.
Base 95 Speed is workable — faster than some, slower than many. On offense, Yanmega is leaning toward the special side (base 116 Sp. Atk). Defensively? Enough bulk to take a hit or two. Best used as a wallbreaker.
Yanmega appears in 12 games, including Platinum, HeartGold & SoulSilver, and Diamond & Pearl.
Available in 12 titles since its debut in Diamond & Pearl, Yanmega spans 6 generations of Pokemon games. It's accessible through wild encounters in a solid number of games.
- Gen IY
Yellow - Gen IRB

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 IVDPDebut

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