Controllable NPCs Only Viewable by 1 Player

I need to make a player NPC that is only viewable by 1 player. I also need to be able to change the item in hand and teleport the NPC. I believe that this can be done with packets, but I am not exactly sure which ones. Can anyone please help?

 

do you already know how to create an NPC? they're extremely hard to do, you might want to look at an open-spource already released plugin to get the basis of NPCs if not

 

Yes, I do. But I only know how to make it viewable to everyone. Is there some specific packet that will allow me to display it to one player only?

 

can you cast the NPC is a viable player? if so, you can use the hide player method, i'm not sure though, i've never worked with NPCs

 

xWatermelon You would have to either modify packets or use ProtocolLib

 

Which packet(s)?

Do you know which packets are used? Comphenix

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Try something like this:
https://gist.github.com/aadnk/5871793

That will allow you to make an entity visible for only one player.