Beamos

Beamos are stone statues with rotating heads and a single glaring eye. They will not hesitate to fire an energy beam at anything that makes eye contact with them. In Ocarina of Time and Majora's Mask, they can be killed with a bomb or two. But watch out; the heads will explode once the body has been destroyed! It takes two bombs to kill larger Beamos. In the Wind Waker, Beamos react faster, and their beams can send you flying. The most effective weapons are arrows; while timing can be difficult, they can also be destroyed with a bomb. However, the glowing ball only appears right before, and during, the time it is firing its energy beam.

Beamos also appear in A Link to the Past, where they cannot be destroyed. But you can hide from their laser behind a rock or ledge. In Twilight Princess, they can be defeated by shooting them with the Hero's Bow in the eye.