Samurai Jack

Samurai Jack is an American animated television series that first aired in 2001 on Cartoon Network. The show was created by Gennedy Tartakovsky. It ended in 2004. It got revived in 2017 on Adult Swim. One episode had Jack entering the dragon’s mouth by entering his pearly white teeth. Jack goes through a tour of the dragon’s belly in order to get his power back to normal again. The episode itself can be seen on a VideoNow disc featuring Samurai Jack and The Powerpuff Girls.