Slipstream

Nobody knows much about where Slipstream actually came from... not even the Decepticons. Some describe her as being a female counterpart to Starscream, but that's probably because she has the same overconfident and cocky attitude as him, and almost the same amount of patience. Not many of the Decepticons actually trust her, presumably because her true agenda is always kept secret from everyone around her. Needless to say, she was one of the many Seekers under Starscream's command before the Great Wars broke out, and she joined up with the Decepticons for reason known to very few. The only thing sharper than Slipstream's acerbic tongue is her keen mind—whether as a soldier or a spy-for-hire, she gets the job done and always makes sure to keep her true agenda shielded.

There are rumors going around that she might be forming a plan to seize command of the Decepticons, but nobody has the evidence to prove it. Regardless, Megatron knows enough about her to keep an eye on her just as he does Starscream. Whenever Slipstream disappears from the radar, one can only assume that she's up to no good. One reason she has openly known among the Decepticons for joining them is because of her rivalry with Arcee, sparked when she murdered the Autobot Tailgate in cold blood. One thing is for certain, the next time they meet on the battlefield, only one of them will walk away in one piece.

After Starscream betrayed the Decepticons, Slipstream appears to become the First Lieutenant of the Decepticons.