The DK Barrel (DKバレル, DK Barrel) is an item from the Donkey Kong universe.
As a trophy
The DK Barrel trophy appears in both versions.
Little known fact: the "DK" on a DK Barrel stands for "Donkey Kong"... What? You mean you already knew that? In that case, you must also know that hopeful feeling you get upon seeing one of these in a really tough stage. Break one to release a helpful partner!
In Smash Tour
In Smash Tour, DK Barrel is a red item. A player can use a DK Barrel at the beginning of a battle to have another one of their acquired characters join them in the battle as a CPU ally.
DK Barrels appear in every game of the Donkey Kong Country series. In the first DKC game, breaking a DK Barrel would allow Donkey Kong or Diddy Kong to regain the other Kong as a partner. Later games would have other Kongs that could be retrieved from DK Barrels to serve as partners, including Dixie Kong, Kiddy Kong, and Cranky Kong.