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Boss InfoBox
Kirby faces Acro, the boss of the Aqua Star in The Crystal Shards.
Debut Game Kirby's Dream Land 3
Last Game Kirby 64: The Crystal Shards
Weakness(es) Enemy/torpedo projectiles, any copy ability
Enemy Info Card
Acro (4).jpg

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Acro regurgitates enemies out of its mouth (above), and attempts to vertically outswim Kirby (below).

Acro is the final obstacle faced on the Aqua Star in Kirby 64: The Crystal Shards, as well as the second boss faced in Kirby's Dream Land 3, taking the shape of an agitated killer whale. Acro focuses on hitting Kirby with projectiles during this battle, whether it be familiar enemies or torpedoes intended to injure. Like the battle with Magman, there are two different persepctives: the first half of the battle is fought horizontally, and the second part is waged vertically, up a narrow water-filled column.


Acro is the only boss fought while swimming in Kirby 64: The Crystal Shards, and rightly so, considering its respective realm. The boss is highly skilled in the ways of the water, zooming from edge to edge, and even glides behind the battlefield in an attempt to skewer Kirby head on. Early in the battle, Acro's attack strategy focuses primarily on hitting Kirby with familiar projectiles, most of which happen to be simple enemies such as the Fishbone that Kirby has encountered previously in his travels across the realm. After using the same suck and propel technique that rendered previous bosses out of commission, Acro changes technique and the entire stage begins to crumble - the only way out is up. Kirby then faces Acro and his many torpedos within a vertically waterlogged column, of which the same attack technique applies, yet Acro is a bit faster and harder to catch/strike, especially with many enemies swimming about the column at the same time.

Like with all enemies and bosses, if Kirby is in possession of a certain copy ability (i.e. Fire, Cutter, etc.) or a combination of two, he will be able to use such powers to injure the boss, instead of sucking in and propelling the rockets provided, as in this battle.



  • Acro is "Orca" backwards, likely a pun on this boss' killer whale-like appearance.
  • In Latin, acro means either height or limbs. The latter of which makes more sense in respect to its name: Acro is a root of "acrobat", who is one that demonstrates prowess of the body. As such, Acro is highly motile.