Certification
- Australia:PG
- Canada:PG (Ontario, season 2)
- Canada:G (Quebec)
- Germany:0 (season 2)
- Germany:6 (volume 1)
- Germany:12 (volumes 2-4)
- India:7 (self-applied)
- Japan:G
- Malaysia:U (DVD rating)
- New Zealand:M
- New Zealand:PG (season 1)
- Philippines:PG-13
- Philippines:PG-13 (self-applied)
- Singapore:PG
- United Kingdom:PG (season 2)
- United States:TV-PG