I have a problem with calling it the worlds, strongest boy, is that you have Little Hercules, born.
How about Aurther, challenges Little Hercules, and
a prodigy Aurthur from Childrens book, along with Prince Aurther. Or even some sorta, who is the real Aurthur.
Then their could be a cow Wizard, that shoot fireball milk bullets like powers, but warps around the room, like Ganon. The Cowseran of the Bovine Empire, ( and they mimic Bulgarian, or Belgium Empire, just to make things easier.