Zihark (ツイハーク, Tsuihāku) was a citizen of Daein during the Mad King's War.
Although he is a citizen of Daein, he dislikes the way the laguz are treated by his nation. He is a brave and kind man, speaking politely to Meg when she came up to speak to him. However, he became quite flustered when Meg claimed that they were getting married. He is also friendly with her father, Brom. It's also shown that he flirts with Ilyana in the chapter that he first appears in, either that or he's just engaging in playful banter, which also confused her, not understanding what he said. He's also very true to his friends, as shown when he joins the Mercenaries after talking with Lethe or Mordecai and also Ilyana if they had a support in Path of Radiance.
Not much is known of Zihark's past, other than that he was born in Daein, and that he eventually fell in love with a laguz of the beast tribe, despite his homeland's prejudice towards the laguz. Their relationship did not last however, as the stress of being in a forbidden relationship proved too much for her. Despite the premature ending of their relationship, Zihark felt no desire to enter another relationship, and spent his time as a travelling mercenary to aid other laguz. Zihark was previously assumed by many to be branded, as that would explain his attachment to laguz. It is revealed in a battle conversation with Izuka, as well as many supports, that Zihark's attachment with laguz is attributed solely to his past relationship.