The Rolling Core is the boss of stage 7 in Gradius IV and the first boss of the second boss rush in Gradius V. It reappeared in Versus mission mode of Otomedius, and it is also the second boss of the loop 2 boss rush in Otomedius Gorgeous.
The Rolling Core has two parts that act semi-independent and also has regenerating weapons.
Rolling Core has several attacks that can take the player by surprise if they're not careful. The outer part will aim at the player and fire up to 8 slow lasers. The inner part will shoot up to four slow lasers, turn on it's side and fire a big laser, or turn backwards and release a swarm of semi-homing missiles. Occasionally, it will spin around and attempt to ram the player. Also, sometimes it will lock the guns to aim left and move up and down shooting lasers randomly. The guns can be destroyed but they will regenerate after a short time.
The Gradius V version does not release homing missiles and is slightly slower. It can also fire a large laser out of its center. After a while, it will rotate around and charge in the player direction.
While the Rolling Core fires it laser, you can shoot straight at its core (without destroying the barriers) to damage it.
|Gradius IV: Fukkatsu|
|Stages||Liquid Metal • Plant • Bubble • Magma • Moai • Cell • High Speed • Boss Rush • Final Fortress|
|Bosses||Yorogaton Chimera • Dendrodium • Bubble Core • Gillador • Alpha/Omega • Berial • Rolling Core • Vanishing Core • Big Core MK III • Covered Tetran • Berserk Core • Planet Core • Bloody Gate • Crab-II • Gofer|
|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)|
|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|