The whole body was made of separate parts and i object->joined them. I also did some booleans for the chest part of the body where i union'd legs, arms and the head. I am kind of new to blender so any help is very appreaciated. Here is the file: https://www.mediafire.com/file/ydpb1sg1x2ojcr7/stylized_character.blend/file
- if i look at your character's mesh...
that's really bad mesh. Maybe you should watch some tutorials about how a mesh should look like.
- spine.006 is the name of your head's bone. So if you check the vertex group with the same name in weight paint mode you will see:
dark blue means: won't be affected by your bone
so toggle to x-ray, go to edit mode, select and tap on assign like this:
but honestly: watch some basic beginner rigging tutorials so that you know what you are doing. That's a very (!) basic question and if you don't know how to weight paint or check your weight paint - you shouldn't do character rigging...