Oren Koga

Oren Koga is the protagonist of ORGN, as well as the leader of Team ORGN. He is also considered a leader to the ragtag group of teams that have come together to fight Salem and Kronos. He is sometimes referred to as a vanguard for Beacon's students.

Abilities
Oren's Semblance is the ability to manipulate air, though it is not used very often. With great focus, this ability can allow him to float and even fly briefly, though it is not strong enough for him to carry a passenger or anything too heavy. Oren is also one of the last remaining individuals in Remnant with the Nexus Factor, which makes him one of the Gold Kings according to the Order of Eyes.This is signified by his eyes glowing gold whenever he utilizes the Nexus Factor. Early, the Nexus Factor manifested as the ability to duplicate and combine others' Semblances. Later, he began to tap deeper into the Nexus Factor, but it was unrefined, and he was not able to completely control it, often resulting in damage to the surrounding environment. At this point, it manifests as powerful energy attacks, as well as an image of a single wing unfurling from his back. After being possessed by Kronos, Oren no longer has the ability to combine Semblances, and the Nexus Factor energy attacks are weakened.

Personality
Oren is generally calm and serious, however he has been known to occasionally display a more easygoing and energetic personality, usually during parties or celebrations with large groups present. While usually collected and composed, Oren has displayed a tendency to be more bashful and nervous around Ruby Rose. In battle, Oren excels at directing large groups, and can skillfully divide his attention to focus on multiple people. He is always willing to tell those he leads where they can improve, and pushes himself equally as hard. While some are put off by Oren's serious exterior, he still manages to be friendly, and has a good relationship with many teams at Beacon.

After being possessed by Kronos, as well as losing parts of the Nexus Factor, Oren loses some of his self-confidence, as well as letting more signs of the stress placed on his shoulders leak through. He is initially unsure of whether he's fit to lead anymore until he realizes that people don't follow him because he's powerful, but because of his leadership abilities.

Appearance
Oren is a mixed Asian-Caucasian teenager with blue eyes and brown hair, though he is usually drawn leaning more toward the caucasian side. When using the Nexus Factor, mirages of wings unfurl from his back, his hair becomes windswept, and his eyes become golden. Oren wears jeans and a belt, a white T-shirt with his emblem on it, and an orange jacket with grey accents. Oren is occasionally drawn with a bit of an ahoge, which, while not as carefree as many characters who have one, does show how Oren can sometimes be rather dense in social situations. Some art also shows an orange streak in Oren's hair, though it is unknown if this is a permanent addition.

After the battle with Shayd, where Oren's jacket was burnt off and shredded, Rem gave him a replacement jacket, white with orange accents. This was worn during the Final Fall of Beacon.

After being possessed by Kronos, Oren's hair becomes white, his eyes become red, and his jacket and shirt become primarily black with red accents.

Team ORGN
Oren is best friends with Gai Hikari, who immediately befriended him on the airship before even landing at Beacon. Rowan Kingsman is loyal to Oren to a fault, having sworn a pledge to fight by his side. He has a small rivalry with his partner, Noric Thunderhorn, who initially disliked him, but came to grudgingly respect him and the rest of ORGN.

Team RWBY
He has been in relationships with Ruby Rose before. Oren had a crush on her immediately upon seeing her, but as they grew to become friends, he began to forget his infatuation and confuse it for simple friendship, being reminded of it by Valerie Bathurst. He and Ruby like each other, but are constantly torn apart by tragic circumstances whenever they come close to confessing their mutual feelings for each other. In ORGN The Next, Ruby and Oren are married with a child.

Others
Oren's major rival of the series is Shayd Pyra, whom he met during the Vytal Tournament. Shayd resented the massive amounts of media coverage that Oren received, despite Oren not being interested in becoming famous in the first place. Working together to expose Ethernal's plot, the two came to respect each other, and Oren inspired a change in Shayd for the better, allowing him to remove his mask in front of others, and prompting the comment that the world seems brighter to him.

Trivia

 * Oren has fought alongside many Unknowns, and has assumed the form of one three times
 * When Kronos possessed Oren, his body was used to transform into Kronos Lost Phase for the first time.
 * When Oren was trapped inside his own Mindscape, Imperium possessed his body, which had already been possessed by Kronos, allowing Oren to transform into Imperium within the Mindscape
 * In ORGN X ORGN The NEXT, an older Oren from years after ORGN's ending transforms into a prototype of Tempus, with his son beside him utilizing the completed version.

Themes
Oren's personal theme song is Cyclone Effect by Labor Day. His theme with Team ORGN is Time to Make History by Shoji Meguro, and his joint theme with Ruby is On Your Wings by Rich Hard.

Etymology
Oren's name was inspired by the character Oren Pierre Alfonzo from Kamen Rider Gaim, chosen for sounding like a shortened form of "orange". Koga was chosen for being the name of a historical ninja clan.

Inspirations
Oren's Nexus Factor initially only manifested as the ability to combine Semblances. This was inspired by the abilities of Ultraman Orb and Ultraman Geed to fuse Ultramen. Interestingly, this would eventually be used by the series' Ultraman homage in the form of Ligero Fusion Type. A similar ability would also be used down the line by Oren's grandson, Gene, who fuses Unknowns to create his different forms.