This stage is from Kirby Super Star. In the sub-game Revenge of Meta Knight, Meta Knight attempts to take over Dream Land using an airship known as the Halberd. In order to stop Meta Knight, Kirby must infiltrate the airship and destroy it from the inside. The Halberd in Smash is loosely based...

“YOU WILL NOW FIGHT A WARRIOR WHO WAS SEALED AWAY FOR FEAR HIS POWER WAS TOO GREAT... -> I WILL NOW SUMMON THIS GREAT WARRIOR ONCE MORE... -> 3… 2… 1… GO!” — Galactic Nova in Meta Knightmare Ultra, Kirby Super Star Ultra Galacta Knight (referred to as Aeon Hero in Quests in Super Kirby Clash)...