Ok, I have two NPC's, one good and one evil.
First one, and since xin is no longer around to be Akari's bro...
Name: Masashi Yukimura
Age: 19
Gender: Male
Ethnic Origin: Japanese
Rider Gear: Riot Trooper Sho
Alignment: Rebels
Appearance:

Background: A survivor of the first Orphenoch War like his sister, Masashi was also injected with Orphenoch DNA and lived with his sister in the streets. After Takumi rescued them from an Orphenoch attack, Masashi hated feeling so powerless and began to train himself in martial arts, and particularly, with swords so that he could better protect himself and his sister.
Years later, once the peace was shattered and Takumi was on the forefront of this new Orphenoch attack, Masashi, although shocked, wanted to put his training to use to protect his sister. When the dying old man left behind the two briefcases, Masashi was hoping to receive the companion belt to Orga, the Psyga Gear. Instead, Masashi got a modified Riot Trooper Gear, which was the test bed for the Rider Gears. Disappointed at first, Masashi still hopes that his training has paid off...
Personality: As the older sibling, Masashi of course thinks it's his duty to protect his little sister, but is kind of oblivious that Akari is also watching out for him. He trains day after day thanks to this duty, although he does find time to help in other chores and duties. He is somewhat stubborn in his thinking and not very trusting of strangers at first, but does warm up to people once he gets to know them.
---------
(Note: This Riot Trooper Gear is my own creation, and if it's not accepted, I can just edit this to let Masashi have a normal Riot Trooper Gear if that is fine...)
Name: Sho Gear
Symbol: Ϸ
Color Scheme: Bronze and Silver
Rider Description: Is average in all areas, though it's defense is slightly lower.
Sho's Equipment:
Sho Buckle: Like the original Riot Trooper Smart Buckle, with a few cosmetic differences.
Axel Ray Gun: The same as normal Riot Trooper's Ray Guns. Has a Blaster and Blade mode.
Sho Ray Katana: Sho's unique weapon that was the basis for the Episilon Kato. Works generally the same, though it runs on it's own power source, not a mission memory.
Sho's Command Codes:
As Sho is a Riot Trooper Gear, it has no Command Codes, but the Sho Ray Katana can still perform a finisher if a switch in the handle is activated.
Vehicle: Gyro Attacker - The same bike that all Riot Trooper Gears use.
-----------------
Now time for the villain...
Name: Carl Silverman
Age: 43
Gender: Male
Ethnic Origin: British
Alignment: Evil
Orphenoch form: Shrike Orphenoch -
Carl increases slightly in size. His color is dark grey, with light shades of grey located on his limbs. His head has what appears to be a beak with slits for where the eyes should be. He can grow wings for flight and can generate a lance for melee combat.
Appearance: Carl looks unusually old for his age with greying temples that contrast his blond hair, and an aged face. He has a standard build and is relatively fit for a man his age. He always wears a black business suit. His eyes are also a odd violet color, which have been this way since he was sired.
Background: Carl inherited his father's weapons business at a young age when his parents died as a result of rival sabotage. He ran the business without incident and sold weapons to the highest bidders, his buyers backgrounds not exactly shining, and attracting Smart Brain in the process. Approached with a large sum of money, he agreed to allowing Smart Brain scientists inject his daughter with Orphenoch DNA. He didn't really worry about the consequences and this, along with other factors, caused his wife to escape with Megumi.
As a way to atone for allowing his daughter to escape, he allowed himself to be sired and changed into an Orphenoch. He also allowed Smart Brain to do the tests that were meant for Megumi on himself, making him unusually powerful for a sired Orphenoch at the cost of his human physical appearance and sanity. He eventually did find where his daughter was hiding and hired Mr. J to bring her back. Hearing of his failure, Carl is currently on his way to Japan to bring her back himself.
Personality: Carl is a smooth talker and looks like a decent guy on the outside. He just uses this as a ruse to disguise his true nature. He really only cares about money and himself. He only see's his daughter as a piece of property that needs to be reclaimed and blames her for his loss of face when she escaped. Since the experiments, his egotism has intensified and his grip on sanity is on the edge. He has to take pills to keep his sanity in check.