Avian and Metra were frustrated that Toz used them as hostages to persuade Red Hook, but just like her, they quickly realized that their presence didn't affect the outcome, only the process. If they hadn't been there, Toz could have just as easily put his sword against Red Hook.
Red Hook and the Representative knew Toz defeated Dristel. They had also sensed that Dristel was stronger than them, but they didn't think Toz would be able to beat them so quickly, considering he almost died in his battle against Dristel. And unless Toz attacked first, he probably wouldn't have an easy time defeating them, but they didn't know that since they hadn't seen anything of his fight with Dristel.
