1 year after the collapse of limbo into our world, a group of soldiers bands together and starts a new society.......The Order of the Sword. They are a group that is fiercely loyal to Angels, fighting along side them against demons to ensure a spot in Heaven. They see both Dante and Vergil as abominations and hunt them continuously. A scientist that joined the group at its creation ( Arius.) has been secretly running on experiments on demons, angels, and humans alike. During these experiments, two children are born. A brother and a sister.
Nero: a half demon/human (Hellion)
&
Lucia: a half angel/human (Half Wing)
Arius is the father of both, using his own DNA to impregnate a female Angel and female Demon. They are both presented to the leaders of the order and are immediately entered into the Orders military program. Lucia is highly looked up to and respected being part Angel. Nero is feared and hated for his demon heritage. But they are extraordinarily loyal to one another.
Nero's weapons of choice are a giant double-barreled revolver (The Red Queen) for range, and a demon gauntlet (Devil Bringer) for close combat. He uses a mixed martial arts style fighting technique. Nero is a power house and uses brute force and grapples/finishers to bring down his opponents.
Lucia uses silver throwing daggers infused with ice (Frost Bite) for long range, and a long curved katana (The Blue Rose) for close range. Her fighting style is similar to Vergil's. Slashing and teleporting around the battlefield to keep enemies on their toes.
20 years later, The siblings are tasked with eliminating both Dante and Vergil, and fight the brothers several times throughout DmC 2. After many confrontations, the pair join Dante and Kat, and are later hunted by the Order.
Sorry.......................couldn't leave out Lucia.