Starscream (BW)
Starscream is a Predacon from the Beast Wars II era of the Generation 1 continuity who was later upgraded into Hellscream.
Starscream is the effeminine Air Commander of Galvatron's Predacons on planet Gaia. He is partnered with the dull-witted BB. Though rediculously girly, he is in reality a treachorous little so-and-so who'll take any oppertunity to seize power. He hates the other Predacon Jet Warriors, Dirge and Thrust, considering them simpletons. In jet-mode he can combine with BB into the "Formation Scream" which enhances their aerial attack power.
He was later upgraded via Angolmois energy into Hellscream.
Fiction
Beast Wars II and Neo cartoon
Stascream and BB were the right-hand men of Galvatron and Megastorm during the Beast Wars on planet Gaia. Starscream's major role during those Beast Wars, however, was to try and kill his fellow Predacons so he could move up the chain of command (he was gunning for Emperor of Destruction). At one point, he even went so far as to dunk Megastorm in a pit of pure Angolmois energy, assuming it would kill him. Unfortunately, all it did was upgrade Megastorm into Gigastorm.
Starscream later got his own Angolmois energy upgrade. Gigastorm, hoping to destroy all the Maximals at once, set up a series of bombs and then hid himself behind a mountain. Starscream and BB then showed up and tangled with the Maximals. They lost, but rather than face an honorable defeat, Starscream pleaded for the chance to switch sides and fight against the Predacons. This enraged Gigastorm, who then activated the explosives regardless of Starscream and BB's safety. The pair then fell into a pit of pure Angolmois, supposedly to their doom. However, Starscream whethered it quite well, emerging from the pit in a new cybernetic shark form as Hellscream.
Hellscream and Max B (the upgraded BB) continued to fight for the Predacons up until the last battle on the battleship Nemesis. At the climax of that battle, Galvatron detonated the battleship, the explosion sending all the remaining Predacons, Starscream included, floating helplessly through outer space.
After the defeat of Unicron, Starscream and the rest of the exiled Predacons were invited back to Cybertron to help restore their home planet.
