When Ikki was little, he was taken in by the Noyamano family, and looked after. (Rika states he was a handful.)Ikki always said that he was chasing rainbows, but never actually reaching them, trying to be sure no one else would have them. That's why he always swung his fists, so he could shine brighter than anyone else.Once, he climbed to the top of a giant tower with Rika watching in terror from the ground. At the top while being rescued by helicopter, Ikki actually bit the arm of the soldier trying to rescue him. As Ikki fell he was rescued by a giant bird, which resembled a crow. Ever since that incident, everyone said he was a "child of the wind."
There are three main women who have feelings/interests for Ikki first one being Ringo who he had always considered a sister(not blood related) but changed after he battled with her and realized she has feelings for him, Simca she takes a huge interest into Ikki from the moment she met him, at one point wanted to become Ikki's tuner and finally Kururu who begins to develop feelings for Ikki this starting when he was hospitalized later she becomes Ikki's tuner. All three have feelings for him, although recently Ikki has shown signs of love towards Ringo.As noted by Sora, Ikki is a detailed oriented guy. Stating that Ikki is very calculating and could easily calculate a counter strike move after figuring out the enemy plans. According to Sora, Ikki had already calcuated how to dodge his and Rikia's super move (e.g. God Crusher Gungnir.) and would done so had Ringo not got in the way and got hit. And after saving Ringo together they quickly countered a larger and more powerful God Crusher Gungnir even though their bodies were freezing due to the extremely cold atmosphere.Ikki is also known to have an unbreakable will. Even when the situation seems hopeless and pointless he never gives in or gives up. Like when he went to save ringo despite being told to give up because she would die and he would die in attempting to save her and succeded in doing so, and quickly reflected an enemy attack together with ringo in extreme cold.Ikki states if you run you will hit a wall and if you fly you will get shot down. But even so if you give up it's the end and it's because of the height of the wall that he was able to grow strong enough to compete with sora. And when ringo says he must have driven crazy falling down again and again on the ground he states because of that he is at his strongest now when is standing up. And proudly states that there is no impposive in his or ringos dictionary.It has been said by Agito that Ikki can break any cage, made by anyone at anytime. Rika has once noted that Ikki is unpredictable and she can never really understand the logic behind his actions, however he is not like Sora who has logic behind his actions. She remarks that it's like he is building something new every second and with every second that piles up he is reborn anew.Sora speculated that before Ikki's eyes there exists infinite number of possiblites for the future.