Sprouts Layber is the final boss in Thunder Cross II. He is the central brain of the Black Impulse Empire.


Sprouts Layber consists of a massive cybernetic monstrosity filled with yellow wires and powered by a core crystal within a glass-like sphere. It enters from behind before joining with the center of the device to activate it.

Attack patterns

In the first phase, Sprouts Layber releases destructible clones of its core crystal. It eventually switches to its second phase and begins shooting red lasers in addition to the crystals. The lasers only fill a specific range, but the crystals can complicate dodging.


  • The core of Sprouts Layber resembles a Core Crystal.
Thunder Cross/Thunder Cross II
Ships and characters Blue Thunder M-45 and Red Thunder M-24Black Impulse
Thunder Cross stages First AttackSkyscrapper CityMachine GraveyardGreat BattleshipEndless LabyrinthFire CavernFinal Base
Thunder Cross II stages Air BattleMachine FortressSpace FortressWaste FactoryLarge BattleshipStar Light

Front Base

Thunder Cross bosses EggerGangerGarch JaegerBiggerBoggerFiggerMachinegar
Thunder Cross II bosses EggerdroidRagamuffinRedcraw MonsterDinosaur Jr.Brookrans WorksLaze ZoguylumSprouts Layber

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