Beamos
A Link to the Past
Ocarina of Time
These almost statue like enemies are not at many places in the game, bu the few places they can be found are Within The Well, the Shadow Temple, Dodongo's Cavern, the Gerudo Training Grounds, the Spirit Temple, and Ganon's Castle. They do not pose much of a threat and their only attack is to shoot a laser from its eye towards Link. To defeat them blow them up with either a bomb, a bomb flower, or a bombchu.
Majora's Mask
Found only in the Stone Tower area, including Stone Tower Temple itself.
These statues just look around in a circle. If they catch sight of you, they will shoot their beam at you through their eye. You can defend against this attack with the Mirror Shield, but it's better to just avoid it altogether. To kill it use Bombs or the Blast Mask. It will then explode, and the head will pop off, which will also explode after a moment.
The Wind Waker
The Minish Cap
Skyward Sword
Beamos are multilayered totem-pole like objects that are made up of different electrified parts. The head of the beamos turns in a mechanical way, as opposed to a fluent turning motion. These enemies can be defeated by slicing apart different sections of their body. The beamos will shoot out a laser beam from its eye, but this attack can be deflected using the shield.