The REV9 Powered Armor is the first powered armor unit encountered by the Point Man in F.E.A.R. 3. Unlike the Replica REV6 Powered Armor, this one is a more advanced version, utilizing more powerful, slower firing heavy autocannons instead of rapid-fire Gatling guns. It also replaces the missile pods of older models with a powerful ray gun, and it can sprint, unlike its heavier counterpart.
Like the heavier EPA, the REV9 does contain automatic self-repair systems. However, if the armor is critically damaged, the pilot will be automatically ejected before the armor explodes, unlike the EPA, which will eject the pilot and then repair itself. However, if the player stays out of the line of fire for a short time, the REV9 will repair itself.
Paxton Fettel must possess a body to pilot this. It is also the first Powered Armor that the player is able to pilot.
When deployed, the REV9 uses much the same mechanism as the REV6 seen in F.E.A.R. 2: Project Origin, except that the sphere that contains the Power Armor explodes in mid-air, and the REV9 lands via the rockets underneath its feet.
These are fought in Intervals 04, 05 and 06 and the Contractions multiplayer map, "Mechanized Invasion". The player can pilot them in Intervals 04, 07 and the "Mechanized Invasion" Contractions map. The encounter in Interval 05 is the only time that the player must fight the REV9 on foot.