Board Thread:Dark Souls II/@comment-28684144-20160607210819/@comment-27019589-20170315034115

The four crowns are as follows: King's Crown Crown of the Sunken King (helm) Crown of the Old Iron King (helm) Crown of the Ivory King (helm) These crowns have varying effects, but after all are acquired, they'll all prevent players from hollowing. To acquire the Soul of the King, you MUST be human, so the use of a Human Effigy is necessary.

Hope this helps,