David is mild-mannered Earth Pony from Canterlot and the only Earth Pony royal guard there.
He once tried to claim the throne for himself, but he got fired and went rogue.
He was captured by Kurayami, lord of all evil, and corrupted into a hideous version of his previous self. He was then given the name, "Mauler".
Now, thank's to his own inner good and the compassion of Rarity, he has been redemed back to being David and has his old guard job back.
His Cutie Mark is spear to represent his guarding skills.
This was requested by DarthWill3.
MLP (c) Hasbro
FIM (c) Lauren Faust