Sentry

The Sentry, formally known as EC Model No. 0045 Sentry, is a small, spherical, repulsorlift Non-Humanoid Hunter-Killer produced by Boskov. They survey indoor structures such as hallways, rooms, corridors and even ambulatories of some buildings to look for OAF personnel to spot. If the Sentry has detected the bullet soldiers, it will send messages back to Boskov, while it'll open fire on its targets before reinforcements arrive.

Design
The overall design for the Sentry is self-explanatory; the Sentry is a rather spherical robot, in which the equator of it has been extruded outward to some degree. At the front of the unit was a small, red "eye" sensor that doubles as a laser for self-defense.

Like the arachnoid Spidey, the Sentry is also lightly armed and armored, and will become destroyed if it takes too much damage. But unlike the Spidey, although, the Sentry was equipped with repulsorlift technology to keep it afloat in the air. As with the Spidey having ambulatory problems, the Sentry has slight calibration issues.

Combat Characteristics
Like the Spidey, the Sentry is also designed for scouting and reconnaissance, but through the air. This gives it an advantage for it to look for OAF personnel from above, making surprise attacks practical. The Sentry will not open fire if Prasiolite or any bullet trooper moves out of sight, or when a target is out of range. As mentioned above, it is lightly armed and armored, and suffers slight calibration problems. It does, however, have one mechanism that is not found in any machine: the self-destruct mechanism. The self-destruct mechanism will help avoid itself from being spotted by OAF forces, at the cost of sacrificing itself for the greater good. As such, they were referred to as "Floating Kamikazes" by the Rebel forces.

Inspirations

 * The Sentinel enemy from Strife and MapleStory.