|Dark Tree King|
|Full Name||Dark Tree King, the Scariest|
|Main Weapon(s)||His cannon-like arms|
|Ability/ies||Going in dreams with nightmares, and to hover|
|Vulnerable To||No light from his glowing eye parts|
|Dream Weaver (by Hunso)|
|First Appearance||Super Mario Bros.: The Popstar Crossover|
|Latest Appearance||Super Mario Bros.: The Popstar Crossover|
He is a red-orange hued tree head that has orange glowing eyes and a mouth in the shape of a W, resembling a evil smile, and has a black cape. He has red-orange hued cannons with some yellow glows on them, which contains red-orange hued Bullet Bills with red eyes. In the arena (during the level of Ztowser), he looks different, such as like he has red glowing eyes and he has some metal shown on him, he has six "arms" that shoot lasers, and his cape is colored dark teal instead of black.
He makes his first appearance here, he haunts Mario, Luigi, and Hunso in their nightmare in Dreaming in a Nightmare, he attacks by shooting Bullet Bills that have red eyes and red-orange hue at Mario and sends out his minions which are smaller versions of himself. His weakness is by unlitting his fiery-like eyes with a water bucket dropped by him after throwing one of his minions at him he summoned, if he is harmed 5 times, he is defeated, he is re-encountered again in the arena (during the level of Ztowser) where there is a robot version of himself, he attacks by using his "arms" that shoot green lasers at Mario, instead of being harmed 5 times to be defeated, he has to be harmed 11 times to be defeated, and instead of summoning his minions, he summons probes instead.
- His head is in the shape of a ghost that is from the original Pac-Man game.