Name: Y/N

Codename: Arkham Knight

Personality: Cold, Serious, Aggressive, Harsh, Rude, Hostile, Impatient, Moody, Possessive, Stubborn, Serious, Smart, Strategic, Creative, Brave, Calm, Caring, Kind, A bit childish, Confident, Faithful, Loyal, Friendly, and Broken

Abilities:
1. Peak human strength
2. Peak Human Speed
3. Agility
4. Flexible and Acrobatic
5. Strong senses
7. Skilled in melee combat
8. Skilled marksman
9. Expert in firearms
10. Stealth   

Arkham Knight / Arknight:

Gear:

(Main and most seen)

1. Dual custom pistol that can transform into a sniper rifle:

2. Grappling hook:

(Additionally gear)

3. Custom Pistol
4. Explosives: Grenades and Stickies
5. Stun Knife
6. Red sword
7. Smoke Bomb
8. Wrist Computer
9. Detective vision

Love interest: Cassandra Cain a.k.a Orphan, former Batgirl

Backstory: Y/N's story is quite similar to Jason's, the Red Hood, with the difference being the way he and Bruce meet. Growing up, Y/N did not live an easy life. He was abandoned by his father and only had his mother to take care of him. She was all he needed because she would always be there for Y/N until she was sadly killed by thugs in the Joker's group. This tragedy led Y/N down a path of vengeance and darkness, and he became Red X. With his creative and intelligent mind, he built gadgets and devices that matched those of Batman.

At first, he and Bruce fought, as Batman tried to stop Red X. When Joker was under his feet, Bruce was there for Y/N, showing him a better way and taking him in. They worked together for years, and he got to meet Alfred, Nightwing, Red Hood, Red Robin, Batgirl, and Spoiler. The life he had with them was what he had wished for. However, he was captured by Joker, tortured, branded, and mentally broken. Joker faked his death and left him to rot in an abandoned area of Arkham, until Deathstroke found and trained him, turning him into "The Arkham Knight." He returned to Gotham and had an all-out war against the Bat Family, which ended the same way Bruce managed to convince Y/N before. Joker was under his feet, gun pointed at his head, a broken Y/N glaring down at the monster, and Batman close by trying to stop him. He succeeded, and Y/N disappeared until he returned and was welcomed with open arms. Now he deals with his family's shenanigans, and the love of his girlfriend, and fights the demons within him.