Partner ideasfor mega Greninja

WaterDark

Pairing ideas, not prescriptions — ideas to test, with every reason traceable. Each card sums up what the partner does for Mega Greninja: completing its plan, patching weaknesses, breaking walls — and how often the two already team up in ranked play. Downsides sit under the card, never hidden. Open a card’s Partnership Report for every reason.

What holds up

Every reason is derived from the pinned dataset, never written by hand
Coverage, resistances, and role gaps are calculated per pair
“On X% of teams” is counted from ranked play, not estimated

Still growing

Not exhaustive — partners that work exist beyond what these rules reach
Some pairings are theory or niche rather than something you meet on ladder
The order is a ranking heuristic; the reasons are the evidence, not the rank

Often paired (2)

Gholdengo
SteelGhost
On 9% of Mega Greninja's ranked teams
Resists Grass Immune to Fighting Resists Bug Resists FairyImmune to Mega Greninja's Sludge WaveHits Bug super-effectively with Power Gem
Sneasler
FightingPoison
On 15% of Mega Greninja's ranked teams
Resists Grass Resists Fighting Resists BugResists Mega Greninja's Sludge WaveHits Grass super-effectively with Dire ClawHits Fairy super-effectively with Dire Claw

Spicy Tech (2)

Alcremie
Fairy
Decorate raises both attacking stats
Resists Fighting Resists BugHits Grass super-effectively with Mystical FireHits Fighting super-effectively with Alluring VoiceHits Bug super-effectively with Mystical Fire
jumbo Gourgeist
GhostGrass
Fighting immunity via Trick-or-Treat
Resists Grass Resists Electric Immune to FightingHits Bug super-effectively with Rock SlideAdds long-game durability
also: Gourgeist (Large Variety), Gourgeist, Gourgeist (Small Variety)

Defensive glue (20)

Mawile
SteelFairy
Covers its Grass, Bug and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveMega Greninja resists its Brutal SwingHits Grass super-effectively with Fire BlastHits Fighting super-effectively with Play RoughHits Bug super-effectively with Fire BlastHits Fairy super-effectively with Steel Beam
galarian Stunfisk
GroundSteel
Covers its Electric, Bug and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveMega Greninja resists its SurfHits Grass super-effectively with Sludge WaveHits Electric super-effectively with EarthquakeHits Bug super-effectively with Stone EdgeHits Fairy super-effectively with Steel Beam
Both weak to Fighting
Beedrill
BugPoison
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveMega Greninja resists its Brutal SwingHits Grass super-effectively with Bug BuzzHits Electric super-effectively with Drill RunHits Fairy super-effectively with Sludge Bomb
Aggron
SteelRock
Covers its Bug and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveMega Greninja resists its Brutal SwingMega Greninja resists its SurfHits Grass super-effectively with BlizzardHits Electric super-effectively with EarthquakeHits Bug super-effectively with Head Smash
Both weak to Fighting
galarian Slowking
PoisonPsychic
Covers its Grass, Fighting and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Sludge BombHits Fighting super-effectively with PsychicHits Bug super-effectively with FlamethrowerHits Fairy super-effectively with Sludge BombAdds long-game durability
Scolipede
BugPoison
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Gunk ShotHits Electric super-effectively with EarthquakeHits Bug super-effectively with Rock SlideHits Fairy super-effectively with Gunk Shot
Garbodor
Poison
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Gunk ShotHits Electric super-effectively with Stomping TantrumHits Fighting super-effectively with PsychicHits Fairy super-effectively with Gunk Shot
Ceruledge
FireGhost
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Bitter BladeHits Bug super-effectively with Bitter BladeAdds team-wide guard support
Skeledirge
FireGhost
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Heat WaveHits Electric super-effectively with Earth PowerHits Bug super-effectively with Heat Wave
Forretress
BugSteel
Covers its Grass, Bug and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveHits Grass super-effectively with Bug BuzzHits Electric super-effectively with EarthquakeHits Bug super-effectively with Stone EdgeHits Fairy super-effectively with Steel Beam
Corviknight
FlyingSteel
Covers its Grass, Bug and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveHits Grass super-effectively with Brave BirdHits Fighting super-effectively with Brave BirdHits Bug super-effectively with Brave BirdHits Fairy super-effectively with Iron HeadAdds long-game durability
Both weak to Electric
Steelix
SteelGround
Covers its Electric, Bug and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveHits Electric super-effectively with EarthquakeHits Bug super-effectively with Head SmashHits Fairy super-effectively with Iron HeadAdds team-wide guard support
Both weak to Fighting
Salazzle
PoisonFire
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with OverheatHits Bug super-effectively with OverheatHits Fairy super-effectively with Sludge Bomb
galarian Slowbro
PoisonPsychic
Covers its Grass, Fighting and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Shell Side ArmHits Fighting super-effectively with PsychicHits Bug super-effectively with FlamethrowerHits Fairy super-effectively with Shell Side Arm
Aegislash
SteelGhost
Covers its Grass, Fighting, Bug and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveHits Fairy super-effectively with Flash CannonAdds team-wide guard support
also: Aegislash (Blade Forme)
hisuian Typhlosion
FireGhost
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with EruptionHits Bug super-effectively with Eruption
Chandelure
GhostFire
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Heat WaveHits Bug super-effectively with Heat Wave
Metagross
SteelPsychic
Covers its Grass and Fairy weaknesses
Immune to Mega Greninja's Sludge WaveHits Grass super-effectively with Ice PunchHits Fighting super-effectively with Psychic FangsHits Bug super-effectively with Rock SlideHits Fairy super-effectively with Meteor Mash
Gengar
GhostPoison
Covers its Grass, Fighting, Bug and Fairy weaknesses
Resists Mega Greninja's Sludge WaveHits Grass super-effectively with Sludge WaveHits Fairy super-effectively with Sludge Wave