This mod adds npc's to your world.
Instructions : download the .mcaddon go to create a world but before you create it fully go to resource packs and activate the dancing npc's mod and go to behavior packs and activate the same thing. Then create the world and search up spawn egg and scroll till you see a purple with black spots spawn egg and spawn npc's.
The npc's will do a arm up and down move like dancing enjoy my mod!
here's what it looks like :

Thx