Hope Jackson, Daughter of Perseus Jackson and Hestia

Hestia broke her oath and had a child with Percy. To protect this child from Zeus' wrath, Percy and Hestia seek aid from Hecate. As their only option, they send the child to another world, far from the eyes of Zeus. The child, with nothing but a pendant and a pen, is discovered by Hydros, the king of the water dragons, and becomes one of six dragon slayers to get sent forward through time in the hopes of defeating the black dragon of the apocalypse and king of all dragons, Acnologia. Though the other dragon slayers forgot when sent through the Eclipse Gate, she remembered her dragon slayer family and decided to find her siblings. When she found them however, they all had a new family or were in an extenuating circumstance that made her decide to find something else to do. And so, after hearing rumors of an empire across the sea, she finds passage, working for a captain of a cargo ship, across the sea and to the Alvarez Empire, where she finds a certain friend who helped send her through the Eclipse Gate, the very man who came up with the plan for the gate to begin with.

Hope is going to be 16 at the time she meets "Emperor Spriggan" and is older than the other dragon slayers. She was also raised by her dragon from infancy and so she is about as powerful as Laxus right off the bat. She is a first generation dragon slayer is powerful enough to activate dragon force at will (not like Sting and Rogue's White and Shadow drives though).