Big Cosmic Clone
From the Super Mario Wiki
Big Cosmic Clones are larger variants of Cosmic Clones that appear exclusively in Super Mario 3D Land. They are four times larger than their original counterparts, have a lower pitched voice, and can also break Brick Blocks. Otherwise, their behavior is the same as the standard Cosmic Clones: They will appear once Mario (or Luigi) reach a certain point in the stage and will begin mimicking their movements. They can be defeated in the same way as a normal Cosmic Clone, which is by reaching the end of the stage, touching them while invincible, or by crossing a point they cannot. The first two methods give ten coins for doing so. They first appear in the Special Worlds and are only found in five of the levels: Special 7-4, Special 7-, Special 8-3, Special 8-5, and Special 8-.