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, Mario will need to transform into a boulder and ram into Rollodillo. This will cause the boss to reveal its weak spot, its rear. Mario will need to hit Rollodillo's rear three times. After this, the boss will explode and grant Mario the Power Star.

Trivia

 * His boss theme is the same as Peewee Piranha.
 * 'Rollodillo' is a portmanteau of 'roll' and 'armadillo'.