Rose is meeting the Autobots and Nest soldiers. When Optimus is done introducing and giving her background information about them she doesn't seem afraid.

"You're not afraid of us?" Optimus asks surprised. Rose shakes her head.

"I've met one of you awhile back, when I was seven." Rose states.

"Who might this Autobot be? Do you remember what this Autobot looks like or their designation?" Optimus asks.

_Keldeo_