Slipstream was a villain in Transformers Animated. Slipstream was created when Starscream made clones of himself. Each clone however had a different personality that was an aspect of Starscream's personality such as lying, gloating, and sucking up. Whatever aspect of Starscream Slipstream represents is probably best left unsaid. For some reason she turned out to be a female making her the only female Seeker in Transformers history.
She hates Starscream and is the smartest of all the clones. Once she saw how poweful Megatron was she instantly joined him.
Slipstream was supposed to revive Starscream in the end of the series finale of Transformers Animated but this scene was cut for time.