Certification
- Australia:M
- Australia:MA15+ (some episodes)
- Canada:14A
- Canada:PG (Manitoba, volume 4)
- Canada:13+ (Quebec, DVD rating)
- Canada:G (Quebec, volume 2)
- Canada:G (episodes 1-2, with warning)
- Canada:18A (two episodes)
- Denmark:11
- Denmark:7 (one volume)
- Germany:16
- Italy:T (with warning)
- Japan:All Ages (self-applied)
- Mexico:TV-14
- New Zealand:M
- Philippines:R-16
- Philippines:SPG (TLVSH, TV rating)
- South Africa:13 (V)
- South Korea:15 (DVD volume 2)
- Spain:13
- Taiwan:12+ (DVD rating)
- Taiwan:6+ (2020)
- United Kingdom:12
- United Kingdom:18 (episode 8, heavily cut)
- United Kingdom:15 (most volumes)
- United States:TV-MA
- United States:TV-14 (Adult Swim TV rating, edited version)