Room 7-DK is the Donkey Kong level of Spooky Attic in Mario vs. Donkey Kong 2: March of the Minis. Like in the boss battles of other unevenly-numbered floors, the player takes control of a cannon that can be moved from side to side, and has to shoot Mini Mario toys into Donkey Kong to attack him. The player's reserve of Mini Marios in this level depends on how many minis in total have been guided to the exit in previous levels of Spooky Attic.
In this fight, Donkey Kong hides under a sheet on a girder, and is shuffled amongst two other girders with sheets on them, briefly coming out after each shuffled, becoming an open target at this point. While this happens, Swoops will hassle the Minis in the cannon by flying in the way and occasionally trying to dive into the cannon. Getting hit by either of these movements will result in the player losing a Mini. After getting hit, barrels and weights will fall from above, which must be avoided to not lose any Minis. Like other battles, Donkey Kong must be hit six times to be defeated.