Certification
- Argentina:13
- Australia:M
- Canada:14A (Canadian Home Video rating)
- Denmark:15 (DVD rating)
- Finland:K-18 (DVD rating)
- France:Tous publics (self-applied)
- Germany:12
- Italy:T
- Japan:G (self-applied)
- Netherlands:12
- New Zealand:M (season 4)
- Norway:15 (DVD rating)
- Poland:15 (DVD rating)
- Singapore:PG
- South Korea:15
- Sweden:15 (DVD rating)
- Turkey:7+
- United Kingdom:12
- United States:TV-14
- United States:TV-PG