WitherBoss attacks ArmorStands
It doesn't matter if an ArmorStand is a Marker (Marker:1b) or even visible (Invisible:1b), the WitherBoss still attacks them.
Command
/summon ArmorStand ~ ~ ~ {CustomNameVisible:1,Marker:1,Invisible:1,Riding:{id:WitherBoss}}
2015-05-25, 10:17 PM
2020-04-03, 12:21 PM
2016-10-10, 05:57 PM
10
10