Li'l Brrs, also called Brr Bits, are enemies that appear in Super Mario Galaxy and Super Mario Galaxy 2. They are first seen in the Freezeflame Galaxy and they are ruled under Baron Brr. They can be seen again in the Toy Time Galaxy in the ice section. In Super Mario Galaxy 2, they can be found in the Freezy Flake Galaxy and the Battle Belt Galaxy. Since Icy Water isn't in Super Mario Galaxy 2, Li'l Brrrs cannot regenerate this way.
If they touch Mario, he will be encased in ice for a few moments and invulnerable to attacks until he breaks free. To defeat a Li'l Brr, just spin next to them to reduce them to stones. Then kick or stomp the stone. However, if Mario kicks the stone into water, the Li'l Brr is reformed. Also, when the Li'l Brr is reduced to stone, it can bounce around until it hits a source of water, so Mario/Luigi has to move fast to defeat it.