With everything that had happened Iggy was in a daze. Sure he might have been able to counter the roar from Mimi, but the screech brought him to his knees and allowed the attack to hit and send him barreling into the wall. "What... happened?" His ears were ringing and the room was spinning. Noises like that were likely to have a rather large effect on him being that his senses were heightened as a dragon slayer. He wasn't sure what to do or say right now. 

(Sorry for the short post. I got nothing much right now...)