The Screw Up

Hiccup Horrendous Haddock's life is not one to be revered, to say the very least. The only things he can do right are his inventions. Not that anyone even dares to realize it. But when a criminal does the impossible: degraded his life, Hiccup is done being nothing. Even just for a while, just revenge. Now, he's not just the screw up; he's something so much more. [Superhero AU]