Partner ideasfor mega Aggron
Pairing ideas, not prescriptions — ideas to test, with every reason traceable. Each card sums up what the partner does for Mega Aggron: 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.
Often paired (4)

Sinistcha
GrassGhostOn 57% of Mega Aggron's ranked teams
Immune to FightingResists GroundHits Ground super-effectively with Matcha GotchaBreaks Water walls with Matcha Gotcha
Incineroar
FireDarkOn 32% of Mega Aggron's ranked teams
Resists FireBreaks Steel walls with Flare Blitz
Basculegion
WaterGhostOn 11% of Mega Aggron's ranked teams
Resists FireImmune to FightingHits Fire super-effectively with Wave CrashHits Ground super-effectively with Wave CrashBreaks Fire walls with Wave Crash
Pelipper
WaterFlyingOn 12% of Mega Aggron's ranked teams
Resists FireResists FightingImmune to GroundHits Fighting super-effectively with HurricaneAdds team-wide guard supportAdds weather control
Spicy Tech (3)

Emolga
ElectricFlyingSpeed Swap hands over its Speed
Resists FightingImmune to GroundHits Fighting super-effectively with Air SlashBreaks Water walls with Discharge
Oranguru
NormalPsychicInstruct repeats the spread move
Hits Fighting super-effectively with Psychic
Alakazam
PsychicSpeed Swap hands over its Speed
Resists FightingHits Fighting super-effectively with PsychicHits Ground super-effectively with Energy BallBreaks Water walls with Energy Ball
Defensive glue (17)

Garbodor
PoisonSpread-safe together for 3 spread moves
Resists FightingHits Fire super-effectively with Stomping TantrumHits Fighting super-effectively with PsychicHits Ground super-effectively with Seed BombBreaks Fire walls with Stomping TantrumBreaks Water walls with Thunderbolt
Araquanid
WaterBugCovers its Fighting, Ground and Fire weaknesses
Hits Fire super-effectively with LiquidationHits Ground super-effectively with LiquidationAdds team-wide guard supportAdds long-game durabilityBreaks Fire walls with Liquidation
Dragalge
PoisonDragonCovers its Fire and Fighting weaknesses
Mega Aggron is immune to its Sludge WaveHits Fire super-effectively with ScaldHits Ground super-effectively with ScaldBreaks Fire walls with ScaldBreaks Steel walls with Focus Blast
Hawlucha
FightingFlyingCovers its Fighting and Ground weaknesses
Hits Fire super-effectively with Stone EdgeHits Fighting super-effectively with Brave BirdAdds team-wide guard supportBreaks Fire walls with Stone EdgeBreaks Steel walls with Close Combat
Gyarados
WaterFlyingCovers its Fire, Fighting and Ground weaknesses
Hits Fire super-effectively with WaterfallHits Ground super-effectively with WaterfallBreaks Fire walls with WaterfallBreaks Water walls with Power Whip
Starmie
WaterPsychicCovers its Fire and Fighting weaknesses
Hits Fire super-effectively with ScaldHits Fighting super-effectively with PsychicHits Ground super-effectively with ScaldBreaks Fire walls with ScaldBreaks Water walls with Thunderbolt
Slurpuff
FairyMega Aggron resists its Misty Explosion
Resists FightingHits Fire super-effectively with SurfHits Fighting super-effectively with Play RoughHits Ground super-effectively with Energy BallBreaks Fire walls with SurfBreaks Water walls with Thunder
Wash Rotom
ElectricWaterCovers its Fire and Ground weaknesses
Hits Fire super-effectively with Hydro PumpHits Ground super-effectively with Hydro PumpBreaks Fire walls with Hydro PumpBreaks Water walls with Thunderbolt
Chimecho
PsychicSpread-safe together for Boomburst and Self-Destruct
Resists FightingHits Fighting super-effectively with Future SightHits Ground super-effectively with Energy BallBreaks Water walls with Energy Ball
Meganium
GrassMega Aggron resists its Petal Blizzard
Resists GroundHits Fire super-effectively with EarthquakeHits Fighting super-effectively with Dazzling GleamHits Ground super-effectively with Leaf StormAdds long-game durabilityBreaks Fire walls with Earthquake
jumbo Gourgeist
GhostGrassCovers its Fighting and Ground weaknesses
Hits Fire super-effectively with Rock SlideHits Ground super-effectively with Power WhipAdds long-game durabilityBreaks Fire walls with Rock SlideBreaks Water walls with Power Whipalso: Gourgeist (Large Variety), Gourgeist, Gourgeist (Small Variety)

Slowking
WaterPsychicCovers its Fire and Fighting weaknesses
Hits Fire super-effectively with ScaldHits Fighting super-effectively with PsychicHits Ground super-effectively with ScaldAdds long-game durabilityBreaks Fire walls with Scald
Slowbro
WaterPsychicCovers its Fire and Fighting weaknesses
Hits Fire super-effectively with Muddy WaterHits Fighting super-effectively with PsychicHits Ground super-effectively with Muddy WaterAdds long-game durabilityBreaks Fire walls with Muddy Water
Greninja
WaterDarkMega Aggron is immune to its Sludge Wave
Resists FireHits Fire super-effectively with Hydro PumpHits Ground super-effectively with Hydro PumpBreaks Fire walls with Hydro PumpBreaks Water walls with Grass Knot
Medicham
FightingPsychicCovers Fire, Fighting and Ground offensively
Resists FightingAdds team-wide guard supportBreaks Fire walls with Rock SlideBreaks Steel walls with Close Combat
Qwilfish
WaterPoisonCovers its Fire and Fighting weaknesses
Mega Aggron resists its Self-DestructHits Fire super-effectively with LiquidationHits Ground super-effectively with LiquidationBreaks Fire walls with Liquidation
Primarina
WaterFairyCovers its Fire and Fighting weaknesses
Hits Fire super-effectively with Hyper VoiceHits Fighting super-effectively with MoonblastHits Ground super-effectively with Hyper VoiceBreaks Fire walls with Hyper Voice