Create NPCs (fake mobs/players) like the ones at /spawn. 

Commands (click to view on the wiki) 

Rules

• The enderdragon, wither and giant are not allowed 
• You may create them in survival, creative and skyblock, however you may only create them on your property unless you have the permission of the property owner. Abuse of this privledge may result in removal of your permissions without refund

Additional information

• Each time you purchase this, you will be allowed to create one more NPC
• You cannot interact with any of the mobs like normal- e.g. you can't breed them, use the villager trades, etc.
• You may create, remove, move and modify any NPC you own at any time
• You can make them move along a defined path, like the cat in spawn