Okay, this is a much more complex ability than what I normally post. My intuition tells me that these abilities should be on the simpler side, as they appear in Hunter x Hunter, but what the heck this is a creative forum right :3. On a side note, this is inspired from Kurapika's emperor time.
Stand Divided
Type: Specialization
The user creates 5 mannequins, each roughly the size of the person. The user himself then turns into nen is transferred to each mannequin. At the same time parts of his body appear on the mannequins, taking the place on certain parts of it. For instance, one mannequin will have portions including the right half of the face (no nose or ear), left hand, part of the right leg from knee to hip, and chest area. All of the body parts are divided among the mannequins.
The user is then able to move each mannequin freely, but is only able to channel nen through the actual parts of his body. In other words, this person cannot use nen on the left hand of a mannequin that doesn't have his actual left hand. Also, the only way to inflict sustaining damage would be to hurt a real part of the user's body. Breaking the a mannequin's left leg would do nothing if de-conjured.
Whats more, each mannequin can only use 1 type of hatsu (enhance, transmute, emit, conjure, and manipulate), And there aren't any real unique properties given to the nen being used.
Now that all the inhibiting conditions are set, each mannequin can use its respective category at 100% potential, meaning that the enhancer mannequin can deal heavy attacks, the emitter mannequin can shoot large amounts of nen, etc. Keep in mind though that each mannequin would only be able to attack from real parts of its body.
And there you have it, Im thinking that I might add more details later, like specifically which body parts go to which mannequin so that this person can use each category to its fullest. Just for now abilities include:
Manipulator: Manipulate the mannequins, including itself. This one could propel or pull back mannequins when it ordinarily couldn't on its own, to avoid danger or to attack. Can also reattach fake body parts that have broken off.
Emitter: shoot nen bullets/blasts from real body parts
Enhancer: strengthen real body parts
Transmuter: Turn nen into sharp hard material, like the sharp edge of a knife. The nen cannot be extended, as emission cannot be used.
Conjurer: Can only conjure more of the plastic like-material the the mannequin's shape. If fake parts of this mannequin are destroyed, it can regenerate by conjuring more parts for itself. Also this one can cover real body parts with the plastic, making it harder to identify. Fake body parts can be conjured as a replacement for the others(but still need to be re attached).
And there you have it. Are there any loopholes I'm forgetting? Overall the complications seem like a weakness when it comes to fighting, but overall there is much more mobility and opportunities in situations that don't include fighting.