Echo

Echo is the little brother of Xieg and Suica. He is also good friends with Theo. He is a timid and a not-so-sociable type especially apart from his siblings but is easily overcome by his dissociative identity disorder, his other personality, alias Koe (Koh-eh, interchanged syllables of Eh-koh). Koe is a very strong, intimidating, and persistent character, although remains the loving brother to both Xieg and Suica, is more vocal about his complaints and less of his actual emotions.