Complex sentence: Cogman, is a polite sociopathic Autobot Headmaster who transforms into a silver 2017 Aston Martin DB11, who will appear in "The Last Knight".
Split into simpler sentences: Cogman, is a polite sociopathic Autobot Headmaster who transforms into a silver 2017 Aston Martin DB11, who will appear in The Last Knight. He will appeared in "The Last Knight".