Okay, so I pretty much have an OC for almost everything that I've ever read/watched in my life. Since this is going to be a crossover, there are going to be two of my OC's...well, I usually make more than one but only to make my OC's story make more sense or so they're not pathetically alone. Also, I almost never try and pair my main OC's with the main characters of the story. Mainly because I get too jealous if they come to care for one of the other female characters. But what I do with my OC is have them be with a side character or make a completely different character for them. I usually make my OC be best friends or siblings with the main character. So without further delay, I will stop my rambling and actually get to describe my OC's for this crossover.
D. Gray Man:
(I have 4 main OC's for this one, simply because I wanted them to be on all sides. But I'm only going to be using 3. Two of them are like a pair so it's like I'm using 2)
Echo: Otherwise known as Eve, wife of the Earl, mother of all akuma, helped create the akuma egg for her husband, can create/destroy but only when touching a living thing does it affect them, considers all Noah to be her children and she usually just observes things instead of actually getting involved. Can teleport like Neiri. Long black hair, usually has golden eyes but doesn't have black skin. Serious, reserved, but can be sadistic at times. Looks late 20's.
Neiri Walker: (She's going to be harder because she's my main, main OC, so she has more history) Echo and Neiri are two halves of a whole, though they are unaware of it. Originally formed when the Cube was. Considered innocence. Can control shadows in a way to allow her to teleport, and can use shadows to physically change the age she looks, though it drains her. Her clothes worked a lot like crown clowns cloak, though black. She had been in love with Allen's past self, and so that's why she sided with Neah when he revolted. When they failed she went into hiding. She turned into a major flirt, wanting to get over Allen's past self. She married Mana to hide better, had a son with him, Nere. He was born shortly after they found Allen. Considers Allen her son. Lives until she gets killed, so people consider her a Noah, but she doesn't have the characteristics. Long, Silver hair, light violet eyes. Looks to be around 20.
Daem: created by both Neiri and Echo long ago, the only akuma/exorcist that didn't become fallen. They had warped the akuma and innocence to the point they would be able to function together. Has two forms, human male with black hair and electric blue eyes, has a dark aura. Other form is a small black eastern dragon that usually is on Neiri's Shoulders. He's quiet, observant but protective of Neiri.
Fairy Tail:
(Two new species, but 1 main OC)
Flyte: Kings and princes, protective of their own. Kind, like peace. Have feathered wings. Pale complexion. More out in the magic world. Agile, smart, typically powerful wizards.
Zafera: Strongest is in control, called Navaar; usually child of Navaar becomes the heir. Navaar is usually female. Strong, agile, smart, strict, quite the temper, pride themselves in who they are. Reptile like tails. Don't like to mingle outside their kind. Typically coco skin toned with dark hair. Doesn't really use magic, their bodies are very resistant to it.
~~~They are mortal enemies, their blood and venom is poisonous to the other. Though in an attempt at peace, the Navaar beds the King of the Flytes. Have a daughter. Daughter prefers the father; mother doesn't like it, gets jealous and kills the king. The daughter escapes, but Flytes and Zafera are at war again. Kings brother temporarily takes throne, daughter is rightful hair.
Endrin Verralis: Half Zafera and half Flyte. Ages differently than normal people, but only after she the age of 18. About every 20 years she ages 1. Lost her father when she was around 5, on the run constantly since. Met Grey when he was training with his teacher. Bumped into Natsu and his father constantly, they became friends. Found Fairy Tail and stayed there when she found out they could protect her if she managed to hide her aura. Constantly in pain because her blood was toxic to itself, until she merges with Etherion. She wasn't supposed to exist at all, so her body is extremely adaptable. Once Etherion is destroyed, she's not in pain anymore, her body accepting itself better. Considered an S-class wizard now. Age 18 so her aging just slowed down. Snow white hair like her father and red eyes like her mother. Kind at first, but angered easily, very protective of her family. Usually around Natsu.
And that's pretty much it, the rest can be explained during the story.