The impending speech is none other than the stirring call to arms delivered by Mon Mothma in Star Wars Rebels.

"It was such a huge thing to me to give that whole speech," O'Reilly tells EW. "The monster who will come for us all soon enough is Emperor Palpatine." With those resounding words, Mon Mothma (Genevieve O'Reilly) gives up any pretension of allegiance to the Empire and declares herself a member of the Rebellion.

We spoke to Andor's Genevieve O'Reilly about delivering Mon Mothma's big Senate speech and being part of something special.