You can copy and paste an already created character, at the character creation screen any time by pressing Ctrl+C.
If you're in a campaign just press the "v" button to open the char creation screen, press Ctrl+C and if you start a new campaign just press Ctrl+V and the one you've created will appear. You can also save those settings you've copied and paste it in a notepad so you can use it anytime. (I recommend doing this because if you use mods or anything and an update makes them unplayable you can't access that character anymore)
This also works for MP
Nice suggestion having an option to make the character stop moving! I think a warband mod had that same idea applied haha.