
It might have a cross instead meaning that Unity has not identified all of the bones. This indicates that Unity has successfully identified all of the bones inside this character model. When you select humanoid and you choose apply, next to the configure button here, you should be greeted by a big tick. And if your character, artist and animator has configured it with the relevant bones inside the 3D modeling software, then you should be able to choose humanoid. If your character has two legs, two arms, a body and a head, then it has the humanoid morphology. A humanoid rig is just the configuration of bones within the character model. Whenever you have the ability to switch to that humanoid rig for a character, you should always try to do so. In this case it does have a humanoid rig. When you move to the animation dropdown, the rig will be none, legacy, or generic but it probably won't be humanoid. When you select the robot Kyle model, and you switch to the rig tab. If this is the first time that you're importing this model, then it may be set up slightly differently to what I have done here and which is included inside the exercise files. It's a robot character, and I'm looking at it here inside the project panel and the object inspector. Inside the model folder, you'll find the Kyle robot, which is also available completely free from the Unity Asset Store. Here inside the project panel, inside the robot Kyle folder. Let's take a look at the character we'll be using.
YOUR RIG HAS THE UPPER CHEST MAPPED IN THE HUMANOID RIG HOW TO
We'll see how to configure that character and get it up and running in this scene.

In this movie, we're going to work with the Unity humanoid system that's part of Mecanim.
