Certification
- Argentina:16
- Australia:MA15+
- Australia:M (season 4)
- Brazil:16
- Canada:14A (Manitoba/Ontario, DVD rating)
- Canada:13+ (Quebec)
- Ecuador:16 (self-applied)
- Egypt:Not Rated (DVD rating)
- France:Tous publics
- France:12 (season 3)
- Germany:6 (some episodes)
- Germany:12 (some episodes)
- Germany:16 (some episodes)
- India:15+ (self-applied)
- Indonesia:17+
- Indonesia:18+ (self-applied)
- Ireland:15
- Italy:VM12
- Italy:T (DVD rating)
- Japan:R15+ (self-applied)
- Mexico:TV-MA (self-applied)
- Netherlands:12
- New Zealand:R13 (some episodes)
- New Zealand:R16 (some episodes)
- Philippines:R-16
- Philippines:18+ (self-applied)
- Poland:15 (self-applied)
- Russia:18+
- Singapore:R21
- South Africa:16
- South Korea:18
- Spain:18
- Sweden:15
- Thailand:18+ (self-applied)
- United Kingdom:15 (some episodes)
- United Kingdom:18 (some episodes)
- United States:TV-MA
- United Arab Emirates:18+ (self-applied)