zombieguard

This its a costum datapack you can use however your imagination wants to i perssonaly use it for hello neighbord project you can use it for a guard(but carfuel he can go thorught walls)
_How to use_: when you join you want to make him a patrol zone to do that you will have to _spawn 10 patrol point_s so he can start over and over again, to do that use :

/summon marker ~ ~ ~ {Tags:["p1"]}

and

:/summon marker ~ ~ ~ {Tags:["p2"]}

and so on to 10 after you finished just type:

/function hello_neighbor:spawn

to spawn him and then go away so he can start his patrol to kill him type :

/kill @e[tag=vecin]

to clear _all the patrol points_type:

/kill @e[type=marker]

and to delte a specific one type:

/kill @e[type=marker,tag=p3,limit=1]

or in your case tag=p1/p2/p3,px to delete a speific point from 1 to 10