Player's HEAD disappears when I press "play"

Welp, hard to figure anything out with just pictures...I'll give you a general direction of where to start looking for answers.

Hit play and look at your Hierarchy, check whether the head is really missing. If it is, then the cause will probably your code. So go to your code, press Ctrl+F, you'll see a Tab at the Top-Right, select the lowest Dropdown and pick "Current Project", then type in "Destroy(" at the search field. You can check all the parts of your code that can destroy objects. You'll find the cause of what is making your head disappear.