Mario & Sonic Guy
Old rivalries live on!
The sad part of the story is that all the past Mario cartoons have never lasted more than a single season, with only 52 Super Show episodes, 26 Super Mario Bros. 3 episodes, and 13 Super Mario World episodes. If those cartoons didn't last very long, I highly doubt that a newer Mario TV series would fare any better.Mario would work because you could just make it have a lot of simple one-off stories focused on different characters. That, and the art style is already primed and ready.