Mirage would've nearly reached to the end when the air just outside of the cell's door twisted with a hum, and Skywarp appeared - he'd have warped right into the cell if he wasn't expressly forbidden to do just that.

He might have ignored it anyway, but he'd had no indication that Thundercracker was in danger. The other Seeker had just consistently been rebuffing his pokes over the comm. for well over a breem now!

"---the frag is takin' so slaggin' long..." huffing, Skywarp kicked the wall beside the door, golden optics narrowing with definitive focus at the scene in front of him, "... huh, apparently you ain't a fraud or anythin'. I suppose Megatron'll be happy for that!"

Skywarp's laughter, then, wasn't particularly nice, but then that was basically Skywarp's default state.