|Achieved By||Touching a Blue Shell|
|First Appearance||New Super Mario Bros|
|Latest Appearance||Mario & Luigi: Bowser's Inside Story|
| Spin around in a Shell.
Take out enemies with ease.
Protect yourself from threats.
Shell Mario can act like a Koopa Shell. With running speed, Shell Mario can slide across the ground inside his shell. While sliding, he bounces off of several walls and blocks, and can even break Brick Blocks or open Question Blocks. However, the downside is that Mario cannot control the horizontal movement the shell when sliding. He can still jump and stop whenever he wants, but moving goes automatic. The shell is also very durable and can withstand various kinds of damage, almost similar to Hammer Mario. It's good at taking out enemies with ease.