Octoguy

Octoguys are enemies appearing in the game Super Mario Galaxy and Super Mario Galaxy 2. They resemble fat, red Electrogoombas with yellow spots. They are different from other Electrogoombas because they can spit many rocks at a time and will attempt to run away at times.

Super Mario Galaxy
In Super Mario Galaxy, these enemies were quite rare, only appearing in mass numbers in the Deep Dark Galaxy. On the planet, they guarded a Fire Flower that was need for Mario or Luigi to proceed through the level.

Super Mario Galaxy
In Super Mario Galaxy 2, Octoguys were much more common. They first appeared in the Boulder Bowl Galaxy and later appeared in the Shiverburn Galaxy's Prankster Comet mission.