Huge Heart is the boss of stage 4 in Gradius V. It is the only organic boss in the game. The Huge Heart itself does not attack. The body around it uses defense mechanisms.

Attack Patterns

The tubes on the top and bottom of the Huge Heart are the source of its attacks. The Huge Heart can attack by releasing rotating bone pillars that fire lightning bolts from the sides, releasing huge tusks at the player's ship (like the famous "teeth" from the first stage of Salamander), releasing a flaming snake-like creature, shooting large lasers from several eyes, and creating small volcano like openings that spew green mucous. The Huge Heart is protected by a force field with a weak spot that circles around the force field that must be destroyed in order for the Vic Viper to shoot the heart itself. The force field regenerates after several seconds.


  • Huge Heart has probably the most gruesome death sequence of all the bosses in Gradius so far. It begins pulsating rapidly while streams of green blood gush out of it in five sections. It then proceeds to explode into a violent, framerate dropping, Michael Bay-esque explosion like every other boss in the game.


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 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)
Organic Bosses
Space Entities NucleusIntruderPhoenix (Geezer Butler)GoliathBubble EyeWyvernVulture DragonBlizzard CrawlerChimeraGilladorVolleoneBiological OrganismLynyrd SkynyrdTriumph KicksGawGigaKiller Dwarf
Body Horror AbadonBrain GolemZylomBig EyeGregolMad SkinBrachion EyeBiterBerialHuge HeartCrawler (X) • Infected Statue
Plant Life Choking WeedStinger KidHunter FangGiga's RoseDendrodiumHans Naughty