Starscream and his very expressive eyebrows from Transformers ...Starscream's personality is defined by his ambition, cowardice, treachery, and enormous ego. He is constantly scheming to overthrow Megatron and seize leadership of the Decepticons, but his treacherous nature and tendency to prioritize his own survival often lead to his downfall. While often arrogant and boastful, he is also prone to panic and cowardice, making him a volatile and unreliable, yet dangerous, character.