There seems to be a glint of amusement in Solus' optics, but it passes in a flash. She stands her ground when Megatron steps closer, lifting her head to challenge his gaze.

"I'm afraid Optimus is the one whose spark is extinguished, not yours," Solus says, her voice grave. "He sacrificed himself in order to stop a far greater threat even than you. It wasn't long after that that you abandoned the Decepticons. Needless to say, without your leadership, the Decepticons ceased to be such a critical threat."

Solus directs a pointed gaze at Starscream. Yeah, buddy, she's lookin' at you.