Cliffjumper is a recurring character in Transformers Aligned continuity, a false protagonist in Transformers Prime, and a major character in Fall of Cybertron.
As revealed in Predatory, during the Great War, Cliffjumper and Bumblebee invaded the lair of Airachnid, who had captured Arcee and Tailgate. Airachnid had already killed Tailgate by the time Cliffjumper and Bumblebee arrived, but they were able to pull a shellshocked Arcee to safety.
Fall of Cybertron
Cliffjumper was one of the starting members of Team Prime to fight the Decepticons on Earth as well as being partner of Arcee. Unfortunately in his debut episode he is killed by Starscream in the first episode. The Decepticons later used his body to reanimate him with the Dark Energon to use him as a test subject and transformed into a terrorcon.