Inaho is a young man who stands at an average height with short black hair that's tousled. His eyes are burgundy, and he has a blank gaze. He wears his high school uniform consisting of a white shirt, red tie, white sweater, light brown blazer, and black pants. Additionally, he carries a dark blue backpack. Inaho is an intelligent and calm individual who can think critically even in times of great distress. He has intuition and isn't afraid to try different tactics to analyze opponents and determine the best strategy.
Inaho lives alone with his sister after their parents passed away before the war. Every morning, he wakes up early to cook breakfast for her and then heads off to school in Shinawara. During a parade, Inaho witnessed the princess being killed by a missile attack. Following this event, the Orbital Knights declared war on the Terrans and invaded Earth. This led to a significant disruption of Inahos daily life.
After Slaine nearly kills him, it is discovered that part of Asseylums powers that activate the Aldnoah Drive were transferred to him when he gave her mouth-to-mouth resuscitation. He now has a bionic eye and a processor specializing in prediction algorithms serving as his temporal cortex. However, its soon revealed that his eye is slowly invading and taking over his brain whenever Inaho uses it, expanding over every time.
At the end of second cour, Inaho decides to get his bionic eye removed since the war has ended and thus, he has no need for it. Instead, he starts wearing an eyepatch.
In episode 10 of the second cour, its revealed that the eye has expanded so much that it takes control of him when he falls unconscious. After this event, its also shown that he can talk with his eye.