Certification
- Argentina:16
- Australia:MA15+
- Brazil:14 (some episodes)
- Brazil:16 (some episodes)
- Canada:14A
- Canada:18A (Manitoba, DVD rating)
- Canada:13+ (Quebec)
- Canada:14+ (some episodes)
- Canada:18+ (some episodes)
- France:12
- Germany:16
- India:18 (self-applied)
- Ireland:15 (some episodes)
- Ireland:18 (some episodes)
- Italy:T
- Japan:R15+ (self-applied)
- Malaysia:(Banned)
- Mexico:C
- Netherlands:16
- Netherlands:12 (DVD rating)
- New Zealand:R18
- Philippines:R-13 (Season 1)
- Philippines:R-16 (Season 2-6)
- Poland:16 (self-applied)
- Singapore:R21
- Singapore:M18 (season 1, edited version)
- South Africa:18
- South Korea:18
- Spain:TP
- Sweden:15 (self-applied)
- Turkey:18+ (self-applied)
- United Kingdom:18 (Season 1 & 2)
- United Kingdom:15 (season 3)
- United States:TV-MA