Big Core MK II is a major upgrade from the original Big Core. He's much larger, has red streaks instead of yellow, can open up to reveal two cores (three in Solar Assault), can shoot many more lasers, and a new attack pattern. He has been featured in several games as well, one of the most obscure is Ganbare Goemon 2 on the NES as a mini-boss. The SNES version of Gradius III calls him Ice Ice. In Gradius Gaiden, he is in the second stage as one of the boss debris. He was not featured in the NES version of Gradius II.
If you're away from him, he will fire Big Core's signature four laser spread. However, if you're in front of him, he will open up and fire his whole laser array at you. When you destroy one core, the other side it's on will stop functioning, meaning only half of his lasers will work and you can stay in that area. This is good and makes the rest of the fight much easier.
In Solar Assault, three satellites (which are destroyable) accompany him to aim at you and protect the cores if he uses the laser attack. If all satellites are down, he will be vulnerable and you can easily destroy his cores. His own laser attack is similar to Big Core MK III's large lasers used to limit player movement.
In Gradius V, he can tilt to face you and shoot and also occasionally tries to ram you. In addition, he will sometimes go berserk, spinning rapidly and firing his lasers randomly.
- Gradius II
- Gradius III
- Gradius V
- Gradius Gaiden
- Solar Assault
- Gokujō Parodius!
- Jikkyō Oshaberi Parodius
- Otomedius Gorgeous
- Yu-Gi-Oh: Big Core MK II is also a Yu-Gi-Oh card and makes a cameo in Yu-Gi-Oh Episode 71.
- Ganbare Goemon 2 (NES): Appears as Mega Nucleus, a cameo boss.
|Gradius II: GOFER no Yabō|
|Stages (arcade)||Artificial Sun • Alien • Crystal • Volcano • Revenge of Moai • High Speed Maze • Boss Rush • Gofer Ship Interior|
|Port-exclusive stages||Gradius II NES Stage 2 (NES) • Volcano - Crystal (NES) • Enemy Base (NES) • Gofer's Lair (NES) • Temple (PC-E)|
|Bosses||Phoenix • Big Eye • Giga (NES) • Crystal Core • Death MK II • Jumping Moai • Big Moai • Desert Core (PC Engine) • Big Core MK II • Zub Rush • Big Core • Golem • Tetran • Gaw • Intruder • Zelos Force (NES) • Covered Core • Demos • Crab • Gofer|
|Stages||Desert • Bubble Zone • Volcanic Planet • High Speed Dimension • Moai Zone • Cell Planet • Prominence Planet • Plant Planet • Crystal Zone • Boss Rush • Mechanical Base|
|SNES exclusive stages||High Speed Zone • Fortress • Cell|
|Bosses||Goliath • Bubble Eye • Godrei • Big Core MK III • Dogas • Vaif • Twin Vaif (SNES) • Gregol • Wyvern • Vulture Dragon • Choking Weed • Lizard Core • Beacon (SNES) • Tetran • Covered Core • Big Core MK II • Crystal Core • Death MK II • Dellinger Core • Disrupt • Shadow Gear • Shadow Gear MK II (SNES) • Big Core • Golem • Bacterian|
|Ships||Vic Viper T-301|
|Stages||Planet Gradius Satellite Orbit • Planet Gradius City Sky A • Planet Gradius Urban Underground Hierarchy • Bacterian Cell Center • Asteroid Front Base • Bacterian Multiplication Plant • Bacterian Fortification Center • Planet Gradius City Sky B|
|Bosses||Big Core MK-I Rev.2 • Venom (lower) • Death MK III • Tetran • Big Core MK II • Big Core MK IV • Ground Spider • Huge Heart • Blaster Cannon Core • Rolling Core • Circle Core • Big Core MK III • Covered Core MK II • Beacon • Keeper's Core • Elephant Gear • Venom (upper)|
|Ships||Vic Viper • Lord British • Alpinia|
|Stages||The River Styx • Fierce Blaze • Curse • Abyssal Forest • Speed Demon • Solar Assault|
|Bosses||Big Core MK I • Intruder • Tutankhamon • Dinosaur • Big Core MK II • Crab|
|Big Cores||Big Core MK I • Big Core Custom • Big Core MK-I Rev.2 • Big Core MK II • Big Core MK II Kai • Big Core MK III • Big Core MK IV|
|Big Core variants||Beacon • Big Core Duo • Blaster Cannon Core • Bubble Core • Circle Core • Coreship • Crater Core • Crystal Core • Dellinger Core • Desert Core • Heaven's Gate • Juggler Core • Laser Core • Lizard Core • Neo Big Core • Perla Meralda • Rexion Core • Rolling Core • Shining Core • Super Big Core • Terra Core • Vanishing Core • Genocide Core • Odin Core|
|Core-style bosses||Abaddon Warship • Covered Core • Covered Core MK II • Dead End • Kraken • Mayhem Warship • Metal Slave • Misfit Warship • Queensrÿche • Riot Warship • Plate Core|
|Pseudo-Cores||Death • Death MK II (DeathDouble) • Death MK III • Beta Core • Nobil • Triple Core • Crash Bam|
|Tetran variants||Tetran (Zylom) • Covered Tetran • Crystal Core D-X02 • Laser Tetran • Tenny Rop|
|Parody Cores||Candy Core • Decoration Core • Decoration Core MK II • Viva Core|