Transformers - Your my everything

During production of the live-action film, writer Alex Kurtzman stated that Starscream would not stray from his treacherous roots as he seeks to overthrow Megatron, and frequently engages in bickering arguments with him. In the film, he is seen vehemently pledging his allegiance to Megatron when the latter breaks free from the Hoover Dam, but unlike the other Decepticons, he is not killed in the final battle and escapes the planet at the end of the movie. For unknown reasons, he passes up a chance to take the All Spark for himself. Although, it could be that he didn't dare try, with Megatron...