The sudden change in mood doesn’t go unnoticed. It’s only natural that Optimus would be upset with them…but the expression on his face makes it seem like he’s been hurt. What could they have talked about to draw that kind of reaction out of Optimus?

“Well…I can’t speak for him, of course, but…I’m sure whatever he said, he didn’t mean any harm. I know he’s always looked up to you.”