Certification
- Australia:MA15+
- Brazil:16
- Canada:14A (Manitoba/Ontario, season 1, DVD rating)
- Canada:18A (Nova Scotia, season 1, DVD rating)
- Canada:13+ (Quebec)
- Ireland:18 (DVD rating)
- Ireland:G (some DVDs)
- Ireland:15 (some episodes)
- Netherlands:16
- New Zealand:R16
- Norway:15 (Streaming rating)
- Poland:15 (DVD rating)
- South Korea:18 (season 8)
- Sweden:18+ (self-applied)
- United Kingdom:18 (episode 4)
- United Kingdom:15 (most episodes)
- United States:TV-MA
- United Arab Emirates:Not Rated (self-applied)