Certification
- Australia:M (DVD rating)
- Canada:14A (Manitoba)
- Canada:PG (Nova Scotia)
- Canada:G (Quebec)
- Germany:16
- Ireland:12 (DVD rating)
- New Zealand:M
- South Africa:10 (DVD rating, volumes 1 and 3)
- South Africa:PG (DVD rating, volumes 2 and 4)
- Spain:13
- United Kingdom:12
- United States:TV-14
- United States:TV-PG (Edited Version)
- United States:TV-MA (some episodes)