Keeper's Core (キーパーズコア?) is the second midboss of stage 7 in Gradius V.


It is fought just before Elephant Gear in stage 7. It is arguably the hardest gunwall boss in the series, and one of the hardest bosses in the game.

Attack patterns

First, Keeper's Core makes artificial Gravity waves on the top and bottom to try to make the player crash while its firing plasma shots at the player. Instead of making Duckers, the duckers come from the left of the screen and attack.

When you destroy the three weapons that fires plasma shots, Keeper's Core stops the gravity waves and charge at the player and starting to move back and for the first time this is the gun wall that can actually move on it own and The spheres you used at an early section of the stage are now obstacles for douching all the Ray cannon wave after the Gunwall release. Easy to deafeat with freeze opt. and e-laser.


Gradius V
Ships Vic Viper T-301
Stages Planet Gradius Satellite OrbitPlanet Gradius City Sky APlanet Gradius Urban Underground HierarchyBacterian Cell CenterAsteroid Front BaseBacterian Multiplication PlantBacterian Fortification CenterPlanet Gradius City Sky B
Bosses Big Core MK-I Rev.2Venom (lower) • Death MK IIITetranBig Core MK IIBig Core MK IVGround SpiderHuge HeartBlaster Cannon CoreRolling CoreCircle CoreBig Core MK IIICovered Core MK IIBeaconKeeper's CoreElephant GearVenom (upper)
Mechanical bosses

Fortress ValisDemosDisruptBloody GateKeeper's CoreEnigmaCrystal GustCliff CoreGunner WallCore ReactorFortress GatePlate CoreTrue Venom

Shadow Walkers

Electronic CageCrabShadow GearShadow Gear MK IISolCrab-IIRotating WallElephant GearElectronic Cage MK2Crab Warlock

Other RecklessStrikerHeavy DuckerHydraGround SpiderCerberus
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