You think you can beat me with that?! Loser.
~ Moai Dimension

Moai Dimension (モアイディメンション Moai Dimenshon?) is the fourth boss in Gradius Gaiden.


Moai Dimension is two (or four on higher loops) Moai heads situated inside a rotating room. Their only appearance is in Gradius Gaiden.

Attack patterns

Moai Dimension rotates around you, firing large rings that split into smaller rings, which in turn split as well. Once they're done rotating, one will be behind you, one in front. They will both fire a stream of heat-seeking rings. If you rotate around them, so that they go in opposite directions, you won't die. After a few more rotations, they will situate themselves above and below you, and continue their attack pattern as normal. Later, they'll return to normal. After one is destroyed (or three, on loop two and higher), the last one fires the split rings much faster. After they're all dead, the walls crumble and fly into the black hole in the background, bringing the Moai with them.



  • Moai Dimension is the only boss which taunts the player before the fight begins in the Gradius series.
Gradius Gaiden
Ships Vic ViperLord BritishJade KnightFalchion β
Stages Beyond the White StormRequiem for RevengersInto the Crystal CageRuins of SilenceOrganic FortressGreen InfernoOn the Event HorizonFormidable GuardiansFate...
Bosses Blizzard CrawlerGraveNobilShining CoreMoai DimensionMad SkinStinger KidHunter FangGiga's RoseKrakenLaser TetranDeathDoubleParasite CoreTriple CoreDeltatryJuggler CoreNeo Big CoreHeaven's GateBoost CoreGunner WallHeavy DuckerSolO.V.U.M.
Enemies MoaiJumping MoaiPetit MoaiRolling MoaiTotem MoaiMother MoaiDogasFlying MoaiChewing MoaiBig MoaiClatteringYoshidaSamoai No. 3Captain MoaiFlasher Maoi
Bosses Big MoaiArmored SaintVaifTwin VaifMoai DimensionAlpha/OmegaDogaltesMoai OrbCrystal MoaiViking MoaiYoshiko
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