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Acks atop each other, as seen in the game Donkey Kong Country Returns for Wii.

Residence(s) Ruins level Itty Bitty Biters
Family Toothberry,
Red Toothberry
Species Unknown
Gender Unknown

Powers/Abilities Stacking over each other,
Leaping back and forward,
Immunity to roll attacks, ground-pounding and peanut shots,
Throwing themselves after seeing enemies
Enemies Kong Family
Game(s) Donkey Kong Country Returns,
Donkey Kong Country Returns 3D
First Appearance Donkey Kong Country Returns (2010)
Latest Appearance Donkey Kong Country Returns 3D (2013)

Acks[1], or Ackstacks, are larger and stacked versions of Toothberries, also enemies found in the games Donkey Kong Country Returns and Donkey Kong Country Returns 3D.


Unlike the regular Toothberries, which are colored blue, Acks are colored yellow. They never show up by themselves individually. Instead, these foes travel as stacks in groups of five. They are only encountered in the Ruins level Itty Bitty Biters.

Acks will usually move back and forward by leaping, patrolling on a single platform. They are invincible to all Kongs' attacks in their upright state, including the ground-pound move and shots from the Diddy Kong's Peanut Popguns. However, an entire stack of the same enemies can be defeated by throwing a barrel at it.

As soon as they notice Donkey and Diddy Kong nearby, Acks will stop and bend back for a few instants, open their mouths and lung towards the two apes. The monkeys must get out of the way so that the Acks miss them and fall to the floor with their mouths open. In this state, each Ack can be defeated only with a single jump attack on the head or a barrel thrown at it.


  • In the same level, Itty Bitty Biters, from the games Donkey Kong Country Returns and Donkey Kong Country Returns 3D, where Acks appear, there are many statues sculpted after the likeness of Acks and their Toothberries variants.
  • Ackstacks slightly resemble Pokeys, enemies from the Super Mario Bros. game series, as both have multiple yellow round body parts stacked on top of each other. However, Pokeys are usually single multi-segmented creatures, and Ackstacks are multiple individuals stacked together, instead.


  1. Donkey Kong Country Returns Prima Official Game Guide, page 26