For general permissions, click here.
LET'S TALK ABOUT POSSESSION AND OTHER MIND HIJINKS.
See, one of Mukuro's favorite things to do is have a whole network of people he's mindlinked to. In order to do this, he has to scratch them with his trident-- it doesn't have to be a big gaping wound, since even a little cut on the ankle will do to establish a psychic link between his mind and someone else's. Why? To watch what they see and do for information gathering purposes, and your character will be none the wiser, unless they're telepathic or are able to sense foreign entities lurking about their minds. You can probably tell where I'm going with this, but it gets worse.
Another of his favorite tricks is to possess people he has a link with, meaning he can wear someone's body like a meat suit and parade around acting like them. If they have some kind of special skill, especially battle or supernatural skill, he can also use them while he's wearing the person-- for example, if he's wearing a chef, he can use their super Iron Chef skills, or if he's wearing a wizard, he can use their Avada Kedavra despite not normally knowing it. Your character may be aware of this, but they will not know it's him until he actually declares himself.
Really invasive, right? Here's where permissions come in. Even if Mukuro does all of these without regard for others, I definitely don't want to unless I'm given explicit permission by
you. If you don't want to reply, that's okay! I can think of some reason why Mukuro wouldn't bother trying to establish a mindlink with your character. But rest assured, whenever he starts thinking of doing so, I'll shoot you a PM immediately, regardless of whether or not you reply to this post.
As a note, non-organics are safe, in case you play such a character. Cyborg vulnerability depends on the number of implants in the body and whether or not the brain has been modified. You need 100% wetware in order to be susceptible to Mukuro.
Here's a handy-dandy form to fill out. Feel free to repeat sections in one comment if you have multiple characters.