Sunstreaker thinks he's better than any other Autobot, and he makes sure everyone else knows it, too. His sociopathic tendencies, along with his incredible vanity and arrogance, usually result in tension. He is unwilling to help those who are struggling, and is quite audible when it comes to complaining about everyone else's shortcomings. Ruthless and skilled in all forms of combat, he only really gets along with his sparktwin; Sideswipe. Suffers from PTSD from formerly being fused with a human.