Eyebot

The  is a hovering propaganda-spewing robot, similar to the Floating Eye bot, but with whip-like radio antennas resembling long "whiskers" pointing to its back, and loudspeakers in the front. After the Great War, it was used by Enclave forces in the Capital Wasteland by 2277.

Uses by the Enclave
Eyebots are used by the Enclave on the East Coast for broadcasting Enclave Radio, which consists of propaganda, presidential speeches, and patriotic marching music for the people of the Capital Wasteland. These propaganda broadcasts, delivered both over in-game radios, the Pip-Boy 3000, or via the robot's loudspeaker, mention that the American Government is watching, and will eventually rise to restore the former glory of the United States. If Raven Rock is destroyed, the robots will broadcast static.

Eyebots are armed with a weak laser called a Zapper, but are neutral to the player and other civilians (i.e. Wastelanders). They will attack enemies like Raiders and Giant Ants. The Brotherhood Outcasts also have a mutual animus with the Eyebots (due to faction dispositions), and presumably the Brotherhood proper do as well (you will never see this, though, as the two do not share a sphere of influence). The Eyebot has little health and explodes when destroyed, causing damage to anything close, including the player. Combined with their low experience reward and no loot (except in rare cases, and even then it's only one piece of Scrap Metal), making the effort to destroy an Eyebot is entirely wasteful. It appears that even though common sense might lead one to believe they are allied with the robotic enemies, rogue Protectrons and Robobrains have been observed destroying them. Despite being initially friendly, Eyebots will attack anyone (including the player) they see fighting against Enclave.

Random explosions frequently heard in the distance while roaming the wasteland can mostly be attributed to an Eyebot self-destructing from damage.

Homo in the bed
Because Eyebots explode, they rarely leave a corpse. They will leave a corpse if killed with a critical hit, however. One way to accomplish this is to un-equip your weapons and punch the Eyebot until its health is near zero, then enter VATS and deal a few blows to it. Laser and plasma weapons will leave an ash or goo pile, respectively, if a critical hit is scored. The corpse will contain one piece of Scrap Metal... However, the easiest way to not destroy the eyebot and retrieve the scrap metal is to shoot at the zapper in VATS; if the finishing blow is made to the zapper (and no other body part during just the final blow), the eyebot will drop lifelessly to the floor and you can then loot the corpse for some scrap metal. Remember: making harmful contact with any other part during the final blow will cause the eyebot to detonate and damage all around it, and you will receive no reward except for miniscule experience.

Appearances
This robot appears in Fallout 3. It also appears in Fallout: New Vegas.

Behind the Scenes
In the book The Art of Fallout 3, an artist mentions that the Enclave Eyebot was designed after the Sputnik-era satillites.