Sparda

Immense Power : Not much is known on Sparda or his powers but he is certainly tremondously powerful and possess immesurable demonic powers that surpasses even that of the God Like Prince of Darkness Mundus and Demon God Argosax,having managed to defeat them in single combat. He also teared through the entire army of Mundus by himself. His Powers are seemingly equalled only by that of his son Dante,as Crow said that Sparda's powers are definitely matched by Dante's own.

Master of Sealing : Sparda was an extremely powerful and adept with Magical Seals,having sealed away demons as powerful as Mundus and Argosax.

Crafting of Magical Weapons : Sparda was also capable of crafting magical artifacts of immense power,creating the Rebellion and Yamato swords and the Perfect Amulet that was the key to the Demon World.

Master Swordsman : Sparda is known to be an extremely skillfull and experienced swordsman,having been the best swordsman in the Demon World and was able to mold Morpheus and Baul into Powerful Swordsmanship masters. His prowess in Swordsmanship are at least superior to that of Dante's,as his student,which was likely far weaker than Sparda,was able to pose some challenge to Dante,and this was further supported by the fact that he has practised his skills and honed them in his battles to a much further degree than his son. He is quite possibly the most skilled swordsman in the series.