Mid-stage Pokemon like Marill rarely see competitive play outside of special formats. It's a waypoint on the road to Azumarill, which is where the real potential kicks in. Only weak to Electric and Grass. Known as the Aqua Mouse Pokemon.
Marill's spread isn't flashy. HP leads, Attack trails, 0 stats clear the bar. Common in the wild and worth 2 HP EVs, on a fast 800K XP curve.
The oil-filled end of its tail floats on water. It keeps MARILL from drowning even in a strong current.
Marill Weakness
GoodMarill's Water typing leaves it vulnerable to Electric and Grass moves. It resists 4 types, giving it decent defensive coverage. Thick Fat reduces Fire/Ice damage, further improving the defensive spread.
- Fairy type does not exist — Dragon has fewer checks
- Physical / Special split now per-move (introduced Gen IV)
Marill is the middle stage between Azurill and Azumarill. It's a three-stage line with one more evolution to go. For breeding, quick to hatch with a decent partner pool via two egg groups. So far, HP got the biggest boost (+20 from Azurill). The final form adds another 170 stats on top.
How to Evolve
Breed with Marill to get Azurill eggs easily using 35 partners from the Fairy and Water1 egg groups. Notable egg moves include Amnesia, Aqua Jet, Belly Drum and 13 more.
Best Build
No build content available for this Pokemon in Gen 4.
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The natural movepool does the job, but Amnesia and Aqua Jet from the egg pool give Marill something extra. Pair those with Hydro Pump and Aqua Tail for STAB and coverage across 9 types for reach, and the kit fills out nicely.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Reminder Moves
Transfer Moves
high spawn rates in mid-game routes across 3 locations. Marill's one of the easier catches on the list. Knock it out fast and save your time for harder targets.
Where To Catch Marill in Platinum
The path to Marill starts with Azurill at Lv. 16-23 via walking encounters. 2 catchable stages total, with locations listed for each one below.
Step 1Catch AzurillCHALLENGINGTrophy Garden - Daily PokemonGrassLv.16-18RareMidForest
Step 2Marill ✓EFFORTLESSRoute 215GrassLv.20-22CommonMidRouteEFFORTLESSRoute 212 - NorthGrassLv.21-23CommonMidRouteCHALLENGINGTrophy Garden - Daily PokemonGrassLv.16-18RareMidForestor evolve from Azurill (Step 1)
Marill isn't fully evolved, so it's not built for competitive play. You'll want to evolve it into Azumarill to unlock its full potential. At 250 BST, it's a stepping stone rather than a team anchor.
Run Huge Power on Marill. It's the ability that defines how you build around it and the main reason it holds a competitive niche. Marill also gets Thick Fat and Sap Sipper, but they don't compare.
Marill fills the balanced role. It's leaning toward the physical side (base 20 Attack). Base 40 Speed is low. Priority moves or Trick Room are the way to go.
Marill appears in 17 games, including Gold & Silver, Crystal, and Ruby & Sapphire.
Marill first appeared in Gold & Silver and has been available in 17 games across 8 generations. Obtainable through catching or hatching as a base form in most titles where it appears.
- Gen IY
Yellow - Gen IRB

Red & Blue - Gen IIGSDebut

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