You will need to use the command
/grabskin KingJump https://www.minecraftskins.com/uploads/skins/2020/06/08/jump-king-14551166.png?v233
to get the skin
Has 3 moves and a death message:
LargeGroundSlam
MediumGroundSlam
ManySmallGroundSlams
https://gyazo.com/593d68be357e4e00253f3a57e6682979
(small and medium ground slams)