Echo is a character that doesn't really have much of a personality right now, but the idea is that while Flair may think he's the next future leader of the group, it really is Echo. He scrawny and weak but he's very intelligent and is good with his words. He has almost the best qualities that you would want, including someone who can listen to you, someone who has an affinity to sense magic, and, when he gets older, someone who is strong. The short notes is that while flair is a hothead, wave King it scared of everything, and Ruby is weird as can be, echo recognizes the heavy crown that's above his head and he is a good leader. While Wave has wisdom, echo has intelligence though not genius-level intelligence. He knows how to work his brain and can pick through things easily, from recognizing what people need to understand weak points. This is part of the reason why Foss is not only a good voice candidate for him but also a good eye to explain the personality of Echo; he is a real King, while Flair is really more just a fighter and a knight. The only other small note I will make about echo that is important is again each of his siblings characterizes one specific trait and his trait is a wise ruler so some of the deliveries should have that in his lines when he's older even at a young age.