Certification
- Australia:M (season 1)
- Australia:MA15+ (season 2, 3 and 4)
- Brazil:14
- Canada:14+
- Canada:13+ (Québec)
- Denmark:15 (DVD rating)
- Egypt:Not Rated (DVD rating)
- Finland:K-16 (DVD rating)
- France:12
- Germany:16 (DVD rating)
- India:18 (self-applied)
- Italy:Not Rated
- Italy:VM14 (original rating)
- Japan:16+
- Netherlands:12
- Norway:15 (DVD rating)
- Philippines:13+ (self-applied)
- Poland:16
- Singapore:PG13 (season 1, season 2, season 3, season 4)
- South Korea:15
- Sweden:15 (DVD rating)
- United Kingdom:15
- United States:TV-14
- United Arab Emirates:16+