Rollodillo

Rollodillo is an armadillo-like boss in Super Mario Galaxy 2. It is fought in the Boulder Bowl Galaxy in the mission "Rock and Rollodillo".

Appearance
Rollodillo is a large beast with a reptilian-like face and mammalian body which is covered in thick blue fur. He has a hide made of pieces of rock which covers the majority of his body minus his rear, face and underbelly.

Strategy
He attacks mainly by rolling around the planetoid in a fashion similar to a boulder. Mario can only fight Rollodillo while Rock Mario. When Rollodillo is rolling around and try to hit Mario. When Rollidillo gets dizzy and stops rolling Mario will need to transform into a boulder and ram into its weak spot, its rear. Mario will need to hit Rollodillo's rear four times. After this, the boss will explode and grant Mario the Power Star.

Trivia

 * "Rollodillo" is a portmanteau of roll and armadillo.