How do I delete a character?

You can easily delete a character in 2D or 3D mode.

To delete them, simply tap them directly.  An option bar will appear, tap 'Delete'. 

See below:

Note: if you delete a member of your cast in a shot and they are not present in any other part of the scene, they are not permanently deleted.

If you go to 'Edit' a character and then check out your cast, you'll see there are two categories: 'On Set' and 'On Call'.

The characters 'On Set' are present somewhere in the project scenes.

The characters 'On Call' have been created in the past but are currently not in use.