This is just a silly OC idea, don't take it too seriously. It's probably considered a Mary Sue/Gary Stu type of character, but I just like to make dumb things sometimes.
I never came up with a name for him, I also need to make a cutie mark.
So, here's the story for him, I didn't put much thought into it.
Twilight tries some magic spell (never decided what she was trying to accomplish in the first place) and it doesn't go how she planned. She end up making this guy. I think she would be a mother like figure to him. He shares a lot of her traits, he likes books, science, nerd stuff, he is interested in magic but isn't able to use it. His wings and horn don't really work. Although I kind of want him to be able to use some magic after studying it for a while and after a lot of serious practice. He would have to learn from Twilight and Zecora, but he still wouldn't be very good at it. His magic would never even be as good a regular unicorn's magic, it would take a lot of effort.
He is a lot calmer than Twilight and doesn't talk much. He gets along with Spike really well. I kind of want him to become good friends with Rainbow Dash, he would talk more around her, and thinks she's awesome.