The combined form of the five Weatherbots.
F-5 was built by Wheeljack.
F-5 remains one of the Autobots' most powerful warriors.
- 9/3 - "Last Stand" - The Dweller has been lured to the Quintessons' Space Bridge Hub and has taken his revenge. The destruction has fed back through the Space Bridge network,
destroying all the Spirals, save for the Bellum. Cut off from their allies, the Quintessons mount a fierce defense against Earth's last assault against them.
F-5 was sacrificed to accomplish some necessary deed years ago.
F-5 is generally controlled by the players making up the Weatherbots.