Samurai Jack.

About Samurai Jack

Samurai Jack, also known as The Samurai or simply Jack, is a sobriquet adopted by the titular protagonist of the Cartoon Network/Adult Swim animated television series Samurai Jack. He was created by Genndy Tartakovsky and is voiced by Phil LaMarr. The character is introduced as a Japanese prince raised since youth as a samurai warrior, who trains under several teachers in order to vanquish the demon Aku with his father's sword. However, before he can do so, Aku sends him into the future, where Aku's future self rules over Earth, which has become a post-apocalyptic dystopia, unopposed. Adopting the alias "Jack", the samurai makes it his mission to find a way back to his time and prevent this future from happening.