No. 0747

Mareanie

Brutal Star Pokémon

Official art

Mareanie is a Poison/Water-type Pokémon, 2× weak to Ground, Electric and Psychic, with a base stat total of 305. It isn’t usable in Pokémon Champions’ Regulation M-C.

Poison Water

Height: 0.4 m 1′04″
Weight: 8 kg 17.6 lbs
Base stat total: 305 Higher than 17% of Pokémon
Introduced: Gen VII Sun & Moon

Abilities

Merciless Limber Regenerator

Pokédex entryShield

Unlike their Alolan counterparts, the Mareanie of the Galar region have not yet figured out that the branches of Corsola are delicious.

See all 6 entries

Base stats

HP50125–157210–304

Atk5365–11599–225

Def6273–125116–245

SpA4356–10481–203

SpD5264–11498–223

Spe4558–10685–207

Total305Higher than 17% of Pokémon

Ranges in Pokémon Champions at Lv 50: 0 Stat Points with a −10% Stat Alignment to 32 Stat Points with a +10% one (HP has no alignment).Ranges in the main games at Lv 100: 0 IV/EV with a hindering nature to 31 IV/252 EV with a helpful nature. EV yield: 1 Def.

Stat calculatorChampions Stat Points & Stat Alignment, or EVs, IVs & nature

Calculate damage →

Type matchups

Colors show what this Pokémon takes

PoisonWatershow which type causes itweaknessresistance

Weak to

2×

ElectricGroundPsychic

Resists

½×

BugFairyFightingFireIcePoisonSteelWater

Takes normal damage from 7 types

NormalFlyingRockGhostGrassDragonDark

Speed tiers

The faster Pokémon moves first each turn, so knowing who you outspeed decides a lot of battles. These are its Speed values at Lv 50 in Pokémon Champions (base Speed 45); Choice Scarf and Tailwind use the Max+ value.

Max+106Max97No SP65Min58

Scarf159Tailwind212

At max Speed, Mareanie outspeeds 11 of the 30 most used Pokémon in Champions VGC on Showdown.

Speed at Lv 50 in Pokémon Champions: Mareanie against the 30 most used Pokémon in Champions VGC on Showdown, fastest first
Speed		Pokémon
203		Mega Garchomp ZModest · 32 SP · #21 on Showdown
200		Mega GengarTimid · 32 SP · #26 on Showdown
190		Mega Raichu YTimid · 23 SP · #13 on Showdown
189		Mega SalamenceTimid · 32 SP · #4 on Showdown
184		WhimsicottTimid · 32 SP · #23 on Showdown
178		Mega MetagrossJolly · 32 SP · #28 on Showdown
178		Mega StaraptorJolly · 32 SP · #29 on Showdown
172		SneaslerAdamant · 32 SP · #2 on Showdown
169		Mega FloetteTimid · 32 SP · #17 on Showdown
169		GarchompJolly · 32 SP · #19 on Showdown
167		Mega Charizard YTimid · 32 SP · #14 on Showdown
167		Mega GardevoirTimid · 32 SP · #20 on Showdown
161		IndeedeeTimid · 32 SP · #30 on Showdown
156		Hisuian ArcanineJolly · 32 SP · #16 on Showdown
150		ArchaludonTimid · 32 SP · #9 on Showdown
149		GholdengoTimid · 32 SP · #8 on Showdown
143		BasculegionJolly · 32 SP · #6 on Showdown
128		PelipperTimid · 32 SP · #12 on Showdown
120		VolcaronaBold · 0 SP · #25 on Showdown
106		Mareanie · Max+32 SP, Speed-raising alignment
105		RillaboomAdamant · 0 SP · #1 on Showdown
101		MiloticCalm · 0 SP · #15 on Showdown
97		Mareanie · Max32 SP, neutral alignment
95		SylveonModest · 15 SP · #18 on Showdown
94		Female IndeedeeRelaxed · 0 SP · #7 on Showdown
90		PolitoedCalm · 0 SP · #22 on Showdown
90		SinistchaBold · 0 SP · #24 on Showdown
85		ArmarougeQuiet · 0 SP · #27 on Showdown
80		IncineroarCareful · 0 SP · #3 on Showdown
80		FarigirafBold · 0 SP · #11 on Showdown
70		KingambitAdamant · 0 SP · #5 on Showdown
65		Mareanie · No SP0 SP, neutral alignment
60		Mega GolisopodAdamant · 0 SP · #10 on Showdown

Smogon · Showdown Others at their most common Speed investment in Champions VGC (Reg M-C · Doubles, Sep 2026); Pokémon holding a Mega Stone are shown as their Mega.

Abilities

Merciless
This Pokémon's attacks are critical hits if the target is poisoned.
Other Pokémon with Merciless 1
Toxapex
Limber
This Pokémon cannot be paralyzed. Gaining this Ability while paralyzed cures it.
Other Pokémon with Limber 13
Persian Hitmonlee Ditto Buneary Lopunny Glameow Purrloin Liepard Stunfisk Hawlucha Toxapex Clobbopus Grapploct
Regenerator, hidden ability
This Pokémon restores 1/3 of its maximum HP, rounded down, when it switches out.
Other Pokémon with Regenerator 24
Slowpoke Slowbro Tangela Slowking Corsola Ho-Oh Tangrowth Audino Solosis Duosion Reuniclus Foongus Amoonguss Alomomola Mienfoo Mienshao Therian Tornadus Mega Dragalge Toxapex Gossifleur Eldegoss Klawf Cyclizar Hydrapple

Competitive

Smogon · Showdown On Showdown

Sep 2026

Other Showdown formats Scarlet & Violet, with Tera

SV SinglesLC

13.5% of teams · rank #10 · Singles, first stages at Lv 5 · 1630 weighting · 7,479 battles · Sep 2026

Most common build

Item: Eviolite
Ability: Regenerator, hidden ability
Nature: Modest
EVs: 116 HP / 100 Def / 252 SpA / 20 SpD
Tera Type: Dragon

Each part is the most used on its own, so not every team runs this exact set.

Usage by rating

All games15.2%
1500 weighting16.0%
1630 weighting13.5%
1760 weighting8.4%

Usage by month

Oct 202513.5%

Moves

Items

Abilities

EV spreads

Modest 116 HP / 100 Def / 252 SpA / 20 SpD37.2%
Bold 116 HP / 180 Def / 12 SpA / 180 SpD35.5%
Bold 116 HP / 180 Def / 92 SpA / 20 SpD / 76 Spe9.5%
Modest 116 HP / 100 Def / 92 SpA / 20 SpD / 156 Spe7.2%
Bold 116 HP / 180 Def / 172 SpA / 20 SpD3.0%

Tera types

Dragon35.9%
Ghost33.7%
Steel12.4%
Ground8.9%

Common teammates

Mienfoo93.1%
Vullaby65.3%
Tinkatink52.6%
Toedscool46.4%
Sandshrew-Alola29.7%
Elekid24.1%
Mudbray22.6%
Glimmet17.8%

Checks & counters

Evolution

#0747MareaniePoisonWater
1. Level 38
  #0748ToxapexPoisonWater

Moves

Level up 12


1	PeckNo additional effect.	Flying	Physical	35	100%	35
1	Poison Sting30% chance to poison the target.	Poison	Physical	15	100%	35
5	Wide GuardProtects allies from multi-target moves this turn.	Rock	Status	—	—	10
10	Bite30% chance to make the target flinch.	Dark	Physical	60	100%	25
15	VenoshockPower doubles if the target is poisoned.	Poison	Special	65	100%	10
20	RecoverHeals the user by 50% of its max HP.	Normal	Status	—	—	5
25	Pin MissileHits 2-5 times in one turn.	Bug	Physical	25	95%	20
30	Toxic SpikesPoisons grounded foes on switch-in. Max 2 layers.	Poison	Status	—	—	20
35	Liquidation20% chance to lower the target's Defense by 1.	Water	Physical	85	100%	10
40	Acid Spray100% chance to lower the target's Sp. Def by 2.	Poison	Special	40	100%	20
45	Poison Jab30% chance to poison the target.	Poison	Physical	80	100%	20
50	ToxicBadly poisons the target. Poison types can't miss.	Poison	Status	—	90%	10

TM / HM / TR 32


TM07	ProtectPrevents moves from affecting the user this turn.	Normal	Status	—	—	10
TM11	Water Pulse20% chance to confuse the target.	Water	Special	60	100%	20
TM13	Acid Spray100% chance to lower the target's Sp. Def by 2.	Poison	Special	40	100%	20
TM21	Pounce100% chance to lower the target's Speed by 1.	Bug	Physical	50	100%	20
TM22	Chilling Water100% chance to lower the target's Attack by 1.	Water	Special	50	100%	20
TM25	FacadePower doubles if user is burn/poison/paralyzed.	Normal	Physical	70	100%	20
TM34	Icy Wind100% chance to lower the foe(s) Speed by 1.	Ice	Special	55	95%	15
TM35	Mud Shot100% chance to lower the target's Speed by 1.	Ground	Special	55	95%	15
TM45	VenoshockPower doubles if the target is poisoned.	Poison	Special	65	100%	10
TM47	EndureUser survives attacks this turn with at least 1 HP.	Normal	Status	—	—	10
TM50	Rain DanceFor 5 turns, heavy rain powers Water moves.	Water	Status	—	—	5
TM70	Sleep TalkUser must be asleep. Uses another known move.	Normal	Status	—	—	10
TM83	Poison Jab30% chance to poison the target.	Poison	Physical	80	100%	20
TM85	RestUser sleeps 2 turns and restores HP and status.	Psychic	Status	—	—	5
TM91	Toxic SpikesPoisons grounded foes on switch-in. Max 2 layers.	Poison	Status	—	—	20
TM102	Gunk Shot30% chance to poison the target.	Poison	Physical	120	80%	5
TM103	SubstituteUser takes 1/4 its max HP to put in a substitute.	Normal	Status	—	—	10
TM104	Iron DefenseRaises the user's Defense by 2.	Steel	Status	—	—	15
TM110	Liquidation20% chance to lower the target's Defense by 1.	Water	Physical	85	100%	10
TM123	SurfHits adjacent Pokémon. Double damage on Dive.	Water	Special	90	100%	15
TM124	Ice SpinnerEnds the effects of terrain.	Ice	Physical	80	100%	15
TM135	Ice Beam10% chance to freeze the target.	Ice	Special	90	100%	10
TM142	Hydro PumpNo additional effect.	Water	Special	110	80%	5
TM143	Blizzard10% chance to freeze foe(s). Can't miss in Snow.	Ice	Special	110	70%	5
TM148	Sludge Bomb30% chance to poison the target.	Poison	Special	90	100%	10
TM171	Tera BlastIf Terastallized: Phys. if Atk > SpA, type = Tera.	Normal	Special	80	100%	10
TM174	HazeEliminates all stat changes.	Ice	Status	—	—	30
TM175	ToxicBadly poisons the target. Poison types can't miss.	Poison	Status	—	90%	10
TM185	Lunge100% chance to lower the target's Attack by 1.	Bug	Physical	80	100%	15
TM202	Pain SplitShares HP of user and target equally.	Normal	Status	—	—	20
TM209	Muddy Water30% chance to lower the foe(s) accuracy by 1.	Water	Special	90	85%	10
TM214	Sludge Wave10% chance to poison adjacent Pokémon.	Poison	Special	95	100%	10

Egg moves 5


Egg	HazeEliminates all stat changes.	Ice	Status	—	—	30
Egg	InfestationTraps and damages the target for 4-5 turns.	Bug	Special	20	100%	20
Egg	Spit UpMore power with more uses of Stockpile.	Normal	Special	—	100%	10
Egg	StockpileRaises user's Defense, Sp. Def by 1. Max 3 uses.	Normal	Status	—	—	20
Egg	SwallowHeals the user based on uses of Stockpile.	Normal	Status	—	—	10

Biology

It preys on Corsola for its delicious coral branches; because of this, it is hated by craftsmen and fishermen who rely on Corsola. Conversely, Mareanie do not prey on Galarian Corsola due to not having developed a taste for their branches.

Design & origin

Mareanie is based on the Acanthaster.

Adapted from Wikipedia: List of generation VII Pokémon · CC BY-SA 4.0 · edited.

Pokédex entries

Category: Brutal Star Pokémon
Debut: Alola · Sun & Moon
Color: Blue
Shape
Habitat: —

Original Alola#113Original Melemele#113Original Akala#045Updated Alola#136Updated Melemele#136Updated Akala#045Galar#307Isle of Armor#127Paldea#344

Unlike their Alolan counterparts, the Mareanie of the Galar region have not yet figured out that the branches of Corsola are delicious.
Shield
The first symptom of its sting is numbness. The next is an itching sensation so intense that it’s impossible to resist the urge to claw at your skin.
Sword
Aside from its head, its body parts regenerate quickly if they’re cut off. After a good night’s sleep, Mareanie is back to normal.
Ultra Moon
They eat Corsola branches, so Mareanie are hated by craftsmen who work with Corsola branches that have naturally fallen off.
Ultra Sun
It’s found crawling on beaches and seafloors. The coral that grows on Corsola’s head is as good as a five-star banquet to this Pokémon.
Moon
It plunges the poison spike on its head into its prey. When the prey has weakened, Mareanie deals the finishing blow with its 10 tentacles.
Sun

Names around the world

English: Mareanie
Japanese: ヒドイデ
Japanese (romaji): Hidoide
Korean: 시마사리
Chinese (Traditional): 好壞星
Chinese (Simplified): 好坏星
French: Vorastérie
German: Garstella
Spanish: Mareanie
Italian: Mareanie

Sprites

Artwork and 3D models

Gen IX · Gen VIII · Gen VII

Training

EV yield: 1 Def
Catch rate: 190 ≈24.8% with a Poké Ball at full HP
Base friendship: 70
Base experience: 61
Growth rate: Medium

Breeding

Egg groups: Water 1
Gender: ♂ 50%♀ 50%
Hatch time: 20 egg cycles ≈5,355 steps (Gen IV–VII)

Where to find

Shield: The Isle of Armor 8 areas

Challenge Beach (Max Den G)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Fields of Honor (Max Den J)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Forest of Focus (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
Loop LagoonWalking in the overworld · Lv 16–60
Loop Lagoon (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Soothing Wetlands (Max Den H)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
Stepping-Stone Sea (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
Training Lowlands (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30

Sword: The Isle of Armor 8 areas

Challenge Beach (Max Den G)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Fields of Honor (Max Den J)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Forest of Focus (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
Loop LagoonWalking in the overworld · Lv 16–60
Loop Lagoon (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Soothing Wetlands (Max Den H)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
Stepping-Stone Sea (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
Training Lowlands (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30

Shield 19 areas

Bridge Field (Max Den G)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
East Lake Axewell (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–30
East Lake Axewell (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Giant's Mirror (Main Area)Fishing at bubbling spots in the water · Lv 26–60
Giant's Mirror (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Lake of Outrage (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Motostoke RiverbankFishing at bubbling spots in the water · Lv 26–60
North Lake Miloch (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–30
North Lake Miloch (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–30
North Lake Miloch (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–30
North Lake Miloch (Max Den F)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–30
Route 9 (Main)Walking in the overworld · Lv 41–44
Route 9 (Outer Spikemuth)Walking in the overworld · Lv 40–44
South Lake Miloch (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
South Lake Miloch (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–30
South Lake Miloch (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–30
West Lake Axewell (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
West Lake Axewell (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
West Lake Axewell (Max Den F)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40

Sword 21 areas

Bridge Field (Max Den G)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
East Lake Axewell (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–40
East Lake Axewell (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Giant's Cap (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Giant's Mirror (Main Area)Fishing at bubbling spots in the water · Lv 26–60
Giant's Mirror (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Lake of Outrage (Max Den A)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
Motostoke RiverbankFishing at bubbling spots in the water, Walking in the overworld · Lv 26–60
Motostoke Riverbank (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
North Lake Miloch (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–40
North Lake Miloch (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–40
North Lake Miloch (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
North Lake Miloch (Max Den F)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
Route 9 (Main)Walking in the overworld · Lv 41–44
Route 9 (Outer Spikemuth)Walking in the overworld · Lv 40–44
South Lake Miloch (Max Den C)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
South Lake Miloch (Max Den D)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
South Lake Miloch (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 15–30
West Lake Axewell (Max Den B)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
West Lake Axewell (Max Den E)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40
West Lake Axewell (Max Den F)Catch a wild Dynamax or Gigantamax Pokémon in a Max Raid battle. · Lv 25–40

Ultra Moon 3 areas

Hau'oli CitySOS Battle, SOS Battle from bubbling spots · Lv 10–22
Melemele SeaSOS Battle, SOS Battle from bubbling spots · Lv 10–22
Route 9SOS Battle · Lv 10–23

Ultra Sun 3 areas

Hau'oli CitySOS Battle, SOS Battle from bubbling spots · Lv 10–22
Melemele SeaSOS Battle, SOS Battle from bubbling spots · Lv 10–22
Route 9SOS Battle · Lv 10–23

Moon 2 areas

Melemele SeaSOS Battle, SOS Battle from bubbling spots · Lv 10–18
Route 9SOS Battle · Lv 10–23

Sun 2 areas

Melemele SeaSOS Battle, SOS Battle from bubbling spots · Lv 10–18
Route 9SOS Battle · Lv 10–23

Locations cover Red & Blue to Sword & Shield (with its DLC) and Let’s Go. We don’t have them yet for Legends: Arceus, Brilliant Diamond & Shining Pearl, Scarlet & Violet and Legends: Z-A.