It's only on xbox LIVE but you go on customize than character the you start customizing!Hope it helped.
go to the custom and press square
match settings
the violence settings can be changed
match settings
the class you get after i believe reaching prestige 14. its the 10th custom class you get
Depends on what controls you are using, look in the settings
You can turn off blood and some language under the settings option.
you have too be signed in with other people then you can change evrything
The call of duty world at war is not a prequel to call of duty black opst.
This really depends on your parental settings (If you have them on). If you don't then yes, just like any other call of duty.
call of duty black ops
depends on what your settings are .if there default then you crouch on PS3 with circle or wii you press c