Samuraibob

Samuraibob is An American-Japanese Spinoff of Spongebob Squarepants. It follows the ancestors of the main cast in an underwater version of ancient Japan. It premiered in May 2019 and Is on it’s first Season.

Plot
Hundreds of years ago in the underwater Kaiyo Empire, there Live three normal citizens: Happīsuponji, Waizusutā, And Yūkan’na Risu. They seem normal, but they are actually samurai and ninjas for the Empire! Together, they fight the Me Empire, ruled by the evil Purankuton.