Volcano Core is a modification of Big Core MK I. It is the boss of stage 3 of Gradius: The Interstellar Assault (Nemesis II: Return of the Hero outside the US). This one has mountains on top and bottom of it and it appears to use this as camouflage. It is slightly harder than Big Core MK I. The destruction scene is it burning up in a planet's atmosphere.
The name 'Volcano Core' is based on features and should not be considered as canon. It is sometimes referred to as Crater Core. As of this time, no official name exists.
Volcano Core's initial attack is similar to Big Core MK I except it's faster. The next phase of it's attack consists of erupting it's volcanoes and releasing indestructible rocks either up or down, depending on it's position.
|Game Boy Gradius games|
|Ships||Vic Viper • Coreship|
|Nemesis (Game Boy) Bosses||Volcano • Super Big Core • Zub Rush • Crawler • Maru Maru • Striker • Iron Maiden MK 2 • Reckless • Mother Computer Z|
|Gradius: The Interstellar Assault Bosses||Infected Statue • Core Reactor • Volcano Core • Keeper's Core EX • Guardian Core • Escape Ship|
|Big Cores||Big Core MK I • Big Core Rev. 1.2 • Big Core MK II • Big Core MK II Kai • Big Core MK III • Big Core MK IV|
|Big Core variants||Beacon • Blaster Cannon Core • Bubble Core • Circle Core • Coreship • Crater Core • Crystal Core • Dellinger Core • Desert Core • Heaven's Gate • Juggler Core • Lizard Core • Neo Big Core • Perla Meralda • Rexion Core • Rolling Core • Rotating Launcher • Shining Core • Super Big Core • Terra Core • Vanishing Core • Viva Core • Genocide Core|
|Core-style bosses||Abaddon Warship • Bubble Eye • Covered Core • Covered Core MK II • Dead End • Kraken • Mayhem Warship • Metal Slave • Misfit Warship • Queensrÿche • Riot Warship • Plate Core|
|Pseudo-Cores||Death (Gau) • Death MK II (DeathDouble) • Death MK III • Beta Core • Nobil • Triple Core|
|Tetran variants||Tetran (Zylom) • Covered Tetran • Crystal Core D-X02 • Laser Tetran • Tenny Rop|