Abominations

Abominations are the informal name of an anomalous object variant. They commonly appear as fusions between two different enemies—in both appearance and function—appearing usually as one enemy with the graphics of another, as well as modified behavior dependent on the combined objects. They have been called “abominations” due to how the combined enemies tend to have vastly distinct bodies, leading to the appearance looking like one creature attempting a grotesque mimicry of another. Although some people have claimed to encounter fusions between three enemies, or even other objects.

Appearance
Visually, they can be most accurately described as the model of one enemy with the textures of another, with minor alterations to the model itself. The textures are usually said to be applied in coherent ways, such as circular textures only being applied over circle textures, but some people claim to encounter fusions that appear glitchier. Despite the appearance, these glitcher versions are said to function identically to their more common counterparts.

Behavior
Functionally, they act near-identically to one enemy, but with behavior modified to resemble another. This usually includes the transfer of any unique attributes or moves of one enemy to another, such as a Skeeter’s ability to walk on water, or a Boo’s ability to disappear, or perhaps even both. Some have even claimed to encounter an abomination holding abilities of an enemy that does not seem to be part of the fusion.

Notable Instances
There have been several similar or even identical documented fusions that have appeared over multiple reports. They have been collected here and given names based off of their components. Curiously, many of the abominations with consistent forms seem to appear in levels with relatively darker themes, such as Big Boo’s Haunt or Bowser in the Dark World.

Chuck-Eye
The Chuck-Eye is a fusion between a Chuck-Ya and a Mr. I. It uses the model of a Chuckya with the purple parts being turned white and the red parts using the texture from Mr. I’s projectile, and the eyes replaced with a large iris and pupil. It usually tries to attack the player similar to a Chuckya, although the player is only damaged instead of being picked up. The Chuck-Eye is also capable of shooting projectiles similar to a Mr. I, although they are said to be faster yet smaller compared to a regular Mr. I’s projectile. The Chuck-Eye is allegedly more aggressive and intelligent than a usual Chuckya, pursuing the player across vast distances or waiting around corners for the player. Due to this behavior, many players claim it feels unfair to fight against a Chuck-Eye. Some have even claimed they need to defeat it by throwing it three times, as opposed to the Chuckya’s regular one throw. This has led some to believe it was meant to be a boss in earlier versions but was scrapped, possibly due to its difficulty. Many claim it uses remnants from a scrapped boss or possibly a final one.

Scuttlebomb
The Scuttlebomb is a fusion between a Scuttlebug and A Bob-omb. It uses an edited version of the Scuttlebug model to have the marbled body replaced to look smooth and black with the eyes being replaced with a Bob-omb’s eyes and the pincers missing, as well as the legs being a yellow-orange color. When it sees the player, it quickly walks very directly and precisely, blowing up on contact with the player or any other obstacles. When it hasn’t seen the player, it seems to walk in no discernible pattern, making random turns in random directions, but avoiding any walls, pits, or obstacles. Less commonly, people claim to see them standing still until the player approaches one, in which case the Scuttlebomb will prompt charge at the player with great speed. Fighting them is said to be a little more difficult than an average enemy, but still not a very great threat. Although they seem to lack a fuse, which makes it harder to tell when it is going to explode, they reportedly only explode on contact with any other object regardless of circumstances, and can not explode otherwise. Jumping on a Scuttlebomb has allegedly never worked, although some claim punches, kicks, and other combat moves do. The most reliable way to defeat one seems to be tricking it into running into another object, such as placing a box between the Scuttlebomb and you.

Skeeterbug
The Skeeterbug is a fusion between a Skeeter and a Scuttlebug. It appears similarly to both, but has longer legs more reminiscent of a Skeeter’s model. The cyan body is replaced with an orange and red one and the eyes resemble a Scuttlebug’s more, as well as the legs being bright red. They have only been reported in the downtown area of Wet-Dry World, where they are said to walk around on the ground, being unable to walk on water. Some have even claimed they walk on walls, a trait that neither Skeeters nor Scuttlebugs have. They are commonly reported to be more passive, only attacking if the player gets very close, although some have claimed they only attack when provoked, if at all. When they attack on land, it’s said to be identical to a regular Skeeter or Scuttlebug, but when underwater it allegedly move directly to the player in straight lines, lacking any animations. Some believe Skeeters or maybe Scuttlebugs were meant to be able to attack underwater, and this behavior is said to be a remnant of that.

Boowhomp
The Boowhomp is a fusing between a Whomp and Boo. It is typically described as a white Whomp with a Boo's face and Mr. I's body texture for their hands. They charge at the player when not looked at, similarly to a Boo, and when the player turns to look at them, they attempt to crush the player like a regular Whomp would. This makes it an incredibly hard enemy, only appearing to players deemed "worthy." It commonly appears in Big Boo's Haunt, as well as Whomp's Fortress if it is affected by the Internal Clock to have a night-time variant.

Speculation
There has been much debate as to whether the abominations are all created by the Personalization A.I. or unused enemies.


 * Supporters of the A.I.-generated entities theory claim they are created by the A.I. when it detects the player needs a greater challenge, assuming one enemy is difficult enough so two enemies combined must be more difficult. This also explains how the abominations sometimes appear glitchy and are comprised of enemies that look abhorrent when combined.
 * Supporters of the unused content theory claim an A.I. would have no way to know which textures should be replaced to look the best and that all aspects of the abominations by all regards displays qualities of intentful design, with any glitches or misplacements being the result of being unfinished and implemented incorrectly.
 * Alternatively, some propose that some abominations were unused assets, with some being the Personalization A.I. attempting to create new fused enemies to horrifying results.