An Ordinary High-School Student who is one day launched 74 years into the future and finds himself in the center of a new global war. He later decides to become an official member of the Alliance Military as the pilot of the Luxon.
Brutal Honesty: He doesn't hide the fact that he's from the past from the Alliance fleet he winds up with.
A young but very talented pilot working for the Alliance. He's entrusted with piloting the Bradyon, an experimental mecha that is not only stronger than your run-of-the-mill mech, but also allows him to form a psychic connection with a compatible pilot in a similar mech.
Bishōnen: Considered to be the most handsome pilot in the army, according to the film crew of episode 6.
But Not Too Foreign: His name and father's appearance hint at the possibility that Dio is biracial and has taken both his father's surname and his mother's maiden name.
Dark and Troubled Past: He fought in a battle to defend the civilian city where his mother and sister were. The Federation fleet there were completely overwhelmed, his mom died, and his sister was left crippled.
And I Must Scream: Thankfully averted thanks to a sudden epiphany on Aoba's part, but she came really close to being trapped in an eternal time paradox where she'd go back in time to save Aoba, lose her memories, become a pilot and meet him again only for the entire cycle to start over.
Fountain of Youth: When she was separated from Aoba while going into the future, she was turned into a much younger version of herself and lost all of her memories save for her name.
Heel-Face Turn: She used to be a member of the Great Zogilian army. We don't know yet why she chose to save Aoba.
Heel-Face Revolving Door: Hina actually started out her temporal adventures on the Confederation's side, before the time loop kicked her into Zogilia minus (another) eight to ten years and her memories.
Star-Crossed Lovers: With Aoba, but not with Bizon. They met and fell in love in college during the original time loop, but Hina was sent to the future and wound up in what later became Aoba's role in the war. She got sent back in time during the final battle and met him again in high school, and the loop was initiated. Bizon in the original loop was Hina's arch nemesis, and likely was trying to kill her when he first went to the past.
Temporal Paradox: Was caught in one, but Aoba's last-minute realization pulls her out of it.
Anti-Villain: Among the Zogilian forces, he is THE Reasonable Authority Figure and looks out for those under his command as best as possible and respects the abilities of his enemies. In fact, he is mortified at Bizon's decision to use the Gorgon on his own army.
Expy: He's a fusion between Rau le Crueset from Mobile Suit Gundam SEED as The Ace and team leader of the Zogillian pilots, and Gilbert Durandal from Gundam SEED Destiny in terms of design, heck his lack of a mask and direct conflict with the hero is the only thing keeping him from being a a true Char Clone.
Red Oni, Blue Oni: The Blue Oni to Margaret's Red Oni. A military expert, Alfried believes that war is a series of ebbs and flows that can change at a moment's notice, and if anything bad happens, you can always regroup and use it to only get stronger. He also believes that if you do something extremely stupid and can die because of it, you deserved it, though he took exception to this when he saved Margaret.
The Strategist: A pretty competent one, as shown in Episode 5, throughout the series he borders on being The Chessmaster when it comes to strategy or manipulating other officers to give him more of a edge in most cases, although he does seem to get stuck behind more then one General Failure and has to try to work around their mess to combat the superior Coupler technology.
A Zogilian mecha pilot from the future who attacks Aoba in the past. He pilots the Nebiros. After the events of season one he's catapulted to a point early in Zogilia's history, where he works his way into the top brass, builds up his support, and launches a successful coup around the time when he was originally sent into the past.
A-Team Firing: Deploys practically the entire arsenal of his mech in episode 1, and still fails to hit a kid on a bicycle. Justified because this would generate a time paradox, and hence, prevent the chain of events that led him to the past in the first place.
Also justified in that Zogilian Valiancers have safety protocols in place that prevent them from targeting unarmed civilians.
Ax-Crazy: Starts off pretty level-headed, but starts getting worse after he sees Hina visibly trying to protect Aoba from him. Then it gets even worse when he becomes a Coupler with a new mech. Part of it may be due to the experimental technology Dr. Hahn was utilizing in it.
Big Bad: The post credit scene for episode thirteen reveals that an old and very ill version of him was actually serving as one of the highest ranking members of the Zogilian leadership this entire time, and is still hellbent on taking Aoba's life.
Die Laughing: Mortally wounded, Bizon decides to use the Gorgon's reserves to destroy everything the Treaty held dear before dying in a blaze of laughter. It doesn't work.
Entitled to Have You: He started off decent enough, but after he starts clueing in to how repeatedly Hina keeps running into Aoba, he begins displaying serious shades of this attitude toward her, referring to her as "my Hina" because he's known her for a long time and they're on the same side.
Evil Old Folks: He didn't die in episode 13; he ricochets into some point early in Zogilia's history where he could easily work his way up to a key position in the Zogilian leadership—all for the sake of eventually killing Aoba, when Dio and Aoba prevent him from going to the past and initiating a Temporal Paradox
Forceful Kiss: Gives Hina one late in the series when he realizes he may be losing her to Aoba. She snaps at him to stop and shoves him away.
Girl Next Door: He first met Hina when she and her father literally moved in next door to his house.
Yandere: his obsessive love toward Hina and his insecurity and jealousy toward Aoba for getting Hina's interest leads to his obsession over killing Aoba, in the process he even hurts Hina and forces himself on her just so he can have her all for himself.
Red Oni, Blue Oni: The Red Oni to Alfried's Blue Oni. Because Margaret is a Political Officer, she wants to see the Alliance crushed at all costs, and finds any failure or mistakes to be unforgivable unless it was by somebody who was extremely loyal to the government. Despite this, Alfried was usually able to get his way, much to her annoyance. She eventually proved not to be a capable leader.
The Political Officer: Essentially served as this, given her wide authority over Alfreid and his forces, despite being outside of the chain of command.
Dio's little sister, who was crippled in the Zogilian assault on her home town that took the life of her mother. She looks up to Dio and attempts to ease the tension in the relationship between her father and brother.
Expy: Of Nunally Lamperouge from Code Geass. She's a a crippled little sister to one of the central protagonists.