Hello LemonPepper, I had a look at your files, you only see the goblin head because you didn't put it inside a skin, unlike the other images.
So, as per instructions here: spine-runtimes/spine-ts at 3.7-beta when a skin is not specified, the default (none) will be used. If you just add data-skin="GoblinMinion" you'll be able to see your minion attacking the floating head 😃
