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Background

Big Core MK III is the third boss to be dubbed Big Core and it debuted in Gradius III. It is drastically different than either of the two previous ones. As you may have already guessed, this one has three cores to destroy. The SNES version of Gradius III calls this QB2B.

Attack Patterns

Big Core MK III attacks by opening up and shooting lasers out of it's wings. Then a reflective laser shoots and bounces off of the giant lasers. If the front cores are destroyed, then the reflecting lasers are exchanged for mini lasers. When closed, it fires five lasers, unless the front two cores are destroyed, then it fires four lasers. When you get above or below it, it fires four lasers behind itself, and eventually it will move towards the left side of the screen and attack you with them.

Gradius V adds some new tactics. First, it will attempt to ram you similar to Big Core MK II. Now you have a chance to destroy the back core directly. There are new attacks here as well. It will shoot straight lasers and homing lasers out of the wings while shooting bullets.

Big Core MK III in Gradius IV is actually a slightly modified version called Big Core MK III Kai(改). It has ability to change the angle of its wing, making its laser attacks more confusing. Since the Big Core MK III in Gradius V wasn't the 'Kai' version, it didn't have this ability.

Gallery

Gradius III
Ships Vic Viper
Stages Sand StormAqua IllusionIn The WindHigh Speed DimensionEaster StoneDead End CellFire ScrambleCosmo PlantAccident Road (SNES exclusive)Crystal LabyrinthBoss RushMechanical BaseUnpleasant Cell (SNES exclusive)
Bosses GoliathBubble EyeIron MaidenBig Core MK IIIDogasVaifTwin Vaif (SNES) • GregolWyvernVulture DragonChoking WeedLizard CoreBeacon (SNES) • Zub Rush MK IITetranCovered CoreBig Core MK IICrystal CoreDeath MK IIDellinger CoreDisruptShadow GearShadow Dancer (SNES) • Big CoreBrain GolemBacterion
Gradius IV
Ships Vic Viper
Stages Stage 1Stage 2Stage 3Stage 4Stage 5Stage 6Stage 7Stage 8Stage 9
Bosses Yorogaton ChimeraDendrodiumBubble CoreGilladorAlpha/OmegaBerialRolling CoreVanishing CoreBig Core MK IIICovered TetranBerserk CorePlanet CoreBloody GateClubGofer
Gradius V
Ships Vic Viper T-301
Stages Stage 1Stage 2Stage 3Stage 4Stage 5Stage 6Stage 7Stage 8
Bosses Big Core Rev. 1.2Venom (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)
Core Warships
Big Cores Big Core MK IBig Core Rev. 1.2Big Core MK IIBig Core MK II KaiBig Core MK IIIBig Core MK IV
Big Core variants BeaconBlaster Cannon CoreBubble CoreCircle CoreCoreshipCrater CoreCrystal CoreDellinger CoreDesert CoreHeaven's GateJuggler CoreLizard CoreNeo Big CorePerla MeraldaRexion CoreRolling CoreRotating LauncherShining CoreSuper Big CoreTerra CoreTriple Core (Life Force)Vanishing CoreViva CoreGenocide Core
Core-style bosses Abandon WarshipBubble EyeCovered CoreCovered Core MK IIDead EndKrakenMayhem WarshipMetal SlaveMisfit WarshipQueensrÿcheRiot WarshipPlate Core
Pseudo-Cores Death (Gau) • Death MK II (DeathDouble) • Death MK IIIBeta CoreNobilTriple Core
Tetran variants Tetran (Zylom) • Covered TetranCrystal Core D-X02Laser TetranTenny Rop

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