Role: Alexander Member / Combatant & Pilot Height: 180cm Age: 20 Gender: Male Personality: Cold and serious. Surprisingly airheaded. Appearance: Purple hair. Purple eyes. Likes: Solitude, fried chicken. Dislikes: His father, being touched. Strengths: Swordsmanship, lying, deduction. Weaknesses: Drawing, children. Relationships: For some reason, Amara is attached to him. He is viewed with both trust and suspicion by all members of Alexander. Other: A beautiful young man who is popular with women on Luminous. His physical abilities are top-tier and superhuman. He is actually a non-human Oni, a fact he has revealed to no one. Past: Born of noble blood, he was abused by his father. He took the Alexander exam to prove his father wrong and passed as the top candidate. Caden apparently took the exam at the same time, but Ian doesn't remember him.

Role: Alexander Member / Combatant & Soldier Leader Height: 184cm Age: 24 Gender: Male Personality: A big-brother figure to everyone. Brave and strong. High-spirited and funny. Appearance: Red hair. Red eyes. Likes: Nothing in particular. Dislikes: Non-humans, lies. Strengths: Babysitting, drawing. Weaknesses: Cooking. Relationships: Childhood friends with Galen and Talia. Relied upon by all Alexander members (though Ian shuts him out). Other: Highly respected on Luminous. Excellent physical abilities (though second to Ian). Past: He has been close friends with Galen and Talia since childhood. While playing, he saw a recruitment flyer for Alexander and applied without telling the other two. He encountered Ian during the exam and was kicked by him; after passing, he tried to talk to Ian, but Ian didn't even remember his face.

Role: Alexander Member / Mechanic Height: 175cm Age: 20 Gender: Male Personality: Innocent. A massive glutton. A bit of an idiot. Appearance: Pink hair. Pink eyes. Likes: All kinds of food. Especially pizza. Dislikes: Hunger, being interrupted while eating. Strengths: Handling machinery. Weaknesses: Understanding the context of a conversation. Relationships: Attached to Ian. Often plays with Galen. Other: Once ate every single type of food available on Luminous. He becomes powerful after eating a large meal. Past: While living in poverty, a recruitment flyer for Alexander blew right in front of him. Seeing that it promised food, clothing, and shelter, he applied and passed.

Role: Alexander Member / Leader Height: 178cm Age: 26 Gender: Male Personality: Sincere and cares for his comrades. Appearance: Slightly long green hair tied back. Green eyes. Likes: Sweet parfaits. Dislikes: Non-humans, lies, being deceived (though he will deceive others for the sake of his comrades). Strengths: Reasoning, negotiation. Weaknesses: Insects (faints if one gets in his face). Relationships: Close with Villela and Hiro. However, he often relies on Caden to handle troublesome matters. Other: The only person capable of speaking up to the Luminous high command and having his opinions actually adopted. Past: Admiring Alexander, he took the exam. He passed the first and second stages with ease but struggled with the third, eventually passing with the help of Hiro, Villela, and Luca.

Role: Alexander Member / Machinist Height: 177cm Age: 21 Gender: Male Personality: Timid but cares for his comrades. Steps up when it counts. Appearance: Long blue hair tied back. Blue eyes. Wears goggles on his head. Likes: Jelly, inventing. Dislikes: Non-humans, darkness, scary things. Strengths: Inventing, persuasion. Weaknesses: Animals (especially dogs). Relationships: Childhood friends with Caden and Talia. Frequently gets dragged into things by Amara. Afraid of Ian. Often teased by Villela. Other: The top inventor on Luminous. Because he is constantly tasked with developing countermeasures against non-humans, he has dark circles under his eyes. Past: When he found out Caden had applied to Alexander alone and passed, he and Talia decided to take the exam together. He passed by the skin of his teeth.

Role: Alexander Member / Medical Squad Height: 187cm Age: 26 Gender: Male Personality: Kind and broad-minded. Appearance: Yellow hair. Yellow eyes. Likes: Sandwiches, Luca (as a brother). Dislikes: Non-humans, telling lies, being lied to. Strengths: Babysitting, drawing. Weaknesses: Exercise. Relationships: Luca's older brother. Close with Lyle and Villela. Often leaves Luca in Caden's care. Talia frequently relies on him and seeks his advice on romance. Other: Recognized by those around him as the only person on Luminous that Kildo actually likes. Past: Luca brought him the Alexander recruitment flyer, so they applied together. He met Villela at the exam site, and they cooperated to pass the first and second stages; he then teamed up with Lyle to pass the third stage.

Role: Alexander Member / Combatant Height: 137cm Age: 16 Gender: Male Personality: Energetic and brave. Childish. Appearance: Yellow hair. Yellow eyes. Likes: Sweets, Hiro, playing. Dislikes: Ian, non-humans. Strengths: Knives, guns, drawing. Weaknesses: Being scolded. Relationships: Hiro's younger brother. Attached to Caden. Other: Infected by a non-human Oni. No one knows this except Hiro, though Ian has figured it out.

Role: Alexander Member / Cook Height: 160cm Age: 19 Gender: Female Personality: Kind and airheaded. Appearance: White hair. White eyes. Likes: Ice cream, children. Dislikes: The death of her comrades. Strengths: Cooking. Weaknesses: Insects, non-humans. Relationships: Childhood friends with Caden and Galen. She has a crush on Caden and often consults Hiro about it. Other: Known as the cutest girl on Luminous.

Role: Alexander Member / Vice-Leader & Combatant Height: 172cm Age: 27 Gender: Female Personality: Mysterious and mature. Appearance: Long black hair. Black eyes. Likes: Steak, fashion. Dislikes: Dirty places. Strengths: Deception. Weaknesses: None. Relationships: Has taken a liking to Galen as a target for her teasing. Other: Famous as the most beautiful woman on Luminous.