Family historyAfter his death, most of Sparda's power was concealed in the demon realm, sealed inside his sword- the Sparda/Force Edge, and was only accessible with an amulet he took with him into the human world. This amulet, which can be separated into two parts, was also one of the keys needed to unlock the portal. All its abilities are deactivated if the halves are separated.
Near the end of his life, Sparda settled with a human wife, Eva, and fathered son, Dante. He gave his amulet to Eva as a gift which she in turn later and passed to her son. Dante received a powerful, enchanted sword from their father, Rebellion to Dante.