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Gradius Wiki

Laser Tetran (レーザーテトラン Rēzā Tetoran?) is the first boss of the boss rush in Gradius Gaiden.


The music played during the fight is known as Boss Rush 1, which is also played during the DeathDouble + Parasite Core and Triple Core boss fights. It is well known for having an attack in the shape of a Swastika. There are 4 core barriers, each between the laser "arms". These barriers have very low health, and it is even possible to damage the core by using the Falchion's Gravity Bullet LV2. The core also has minimal health, meaning this boss won't last very long. On higher loops, it shoots a few suicide bullets when it dies. These are also easy to dodge.

Attack patterns

Laser Tetran will appear in the center of the screen and fire a multi-coloured four laser burst. It will then fire two lasers to push itself into you, firing sets of four Red and Black homing bombs as it moves. It will repeat this pattern a few more times, and then it will fire all eight lasers at once. This is rather hard to dodge, but it is possible.


See also

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.
Core Warships
Big Cores Big Core MK IBig Core CustomBig Core MK-I Rev.2Big Core MK IIBig Core MK II KaiBig Core MK IIIBig Core MK IV
Big Core variants BeaconBig Core DuoBlaster Cannon CoreBubble CoreCircle CoreCoreshipCrater CoreCrystal CoreDellinger CoreDesert CoreHeaven's GateJuggler CoreLaser CoreLizard CoreNeo Big CorePerla MeraldaRexion CoreRolling CoreShining CoreSuper Big CoreTerra CoreVanishing CoreGenocide CoreOdin Core
Core-style bosses Abaddon WarshipCovered CoreCovered Core MK IIDead EndKrakenMayhem WarshipMetal SlaveMisfit WarshipQueensrÿcheRiot WarshipPlate Core
Pseudo-Cores DeathDeath MK II (DeathDouble) • Death MK IIIBeta CoreNobilTriple CoreCrash Bam
Tetran variants Tetran (Zylom) • Covered TetranCrystal Core D-X02Laser TetranTenny Rop
Parody Cores Candy CoreDecoration CoreDecoration Core MK IIViva Core