Kamek Kerfuffle

Kamek Kerfuffle is an anomalous level found in some personalized copies of Super Mario 64 DS. The level serves the purpose as a level meant to unlock Yoshi, who is usually the first playable character in the game. This usually leads to Mario being the first playable character instead, with some missions being rearranged to account for this alteration. The level itself has been described as a jungle level, a unique level theme, similarly to Goomboss Battle, the level it most commonly replaces.

Description
As previously stated, the level is a jungle, with several large trees scattered throughout the level. There are also vines hanging from these trees that can be climbed, allowing for navigation of the higher parts of Kamek Kerfuffle. The level has several enemies, mainly being the same list seen in Goomboss Battle, but some say this level can have unique enemies, likely due to the difference in theme compared to the rest of the game. The most common of these is the ravens seen in the Yoshi's Island series, walking around the tree branches towards the top of the level, but Magikoopas have also been reported, teleporting around and shooting magic at the player, likely due to this level's boss.

Power Stars
Like many other levels, Kamek Kerfuffle reportedly has an 8 red coins star, typically requiring the player to go to multiple trees to obtain the red coins. There is also reportedly a star in an extra area found by using Yoshi's Power Flower ability to burn down vines blocking the way to the star. This area is usually the inside of a tree, but it can also be a cave of some kind on the ground of the level.

Boss Fight
The level's boss, as the name suggests, is Kamek, obviously a reference to their role as antagonist in the Yoshi's Island franchise. The boss arena is usually the top of a particularly large tree, or a wizard's tower. Kamek themself usually acts identically to the Magikoopas previously mentioned, but more aggressive, sometimes flying around on a broom above the player, only occasionally sweeping down to attack physically. If they are on a broom, they have to be jumped on when they sweep down, but can be punched if they just teleport around like a regular Magikoopa once they teleport onto the arena, or alternatively the player would have to punch their magic to send it flying back at them, similarly to the Kamella boss fight in Super Mario Galaxy. This boss is notable as it's the only boss documented in any of these levels to not be based off of an enemy in unpersonalized copies.

Trivia

 * If this level replaces Goomboss Battle, the Halved Key phenomenon has still been reported to occur.