Heavy Ducker is an orange, giant version of the Duckers and is the 3rd boss of final stage in Gradius Gaiden before the indestructible Rolling wheel of Sol. It has its own unique boss theme. It attacks with a machine gun, a laser gun (which may shoot shots or a beam) and mines that explode. It can also shoot the player while in the background, utilizing the Playstation's 3D capabilites.


  • It is the only land-based Core Boss ever in all of Gradius (besides Elephant Gear in Gradius V).
  • The Heavy Ducker's looks resemble the Metal GEAR from the Metal Gear series, also by Konami.
  • Heavy Ducker appears as a common enemy in Otomedius Excellent.
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.