The Binary Fusion Pod, dubbed the Fuser, is an item Sage invents in Ascent of the Red Sentients Part 2. This item allows two drivers in the Battle Force 5 to combine their vehicles, resulting in a hybrid with added capabilities. There are 2 factions: Red and Blue. Their entire existence is based on logic and the conquest of other worlds. The Sark are a race of robots from the Planet Sark, as well as occupying the Red Sentient planet. The reds and the blues had a truce, which was broken when Krytus rebelled, forcing Sage to freeze the red Sentient population using the Double-Helix Crystals. They were under control of Zemerik during the first season, but they reprogrammed by Krytus and his team and served as their reinforcements during most of the season. Sentients are a race of highly intellectual energy lifeforms that created the Battle Zones, the Battle Keys, and the Multiverse years ago. Each vehicle has an identification modulator, molecular bonding mode, magnetic Battle Key grapplers, and a com-link system, and is powered by a Sentient Chip. The SkyKnife debuted in Ascent of the Red Sentients, Part 2. where Vert and Zoom fought Krytus and Kyrosys in the Battle Zone where Kyrosys was imprisoned. Battle Force 5, Battle Force 5 are the main protagonists in the series, led by Sage with Vert Wheeler as the field commander.Their headquarters are located in Vert's garage (which features an underground level called "The Hub"). This aerial assault vehicle can transform into an airplane-like craft with the Saber's signature chainsaw blade as the primary armament. The SkyKnife is a binary fusion of the Saber and the Chopper.