Nelo Angelo's Greatsword is the large, unnamed weapon Vergil sports in his Nelo Angelo persona after being corrupted by Mundus. The weapon is available in Devil May Cry 3: Special Edition after equipping Vergil's alternate costume and utilizing Devil Trigger, taking the place of Yamato.
Nelo Angelo's sword appears large greatsword with various blue markings adorned on the blade when it is surrounded by a blue aura when active in power. In its normal form, it appears in a metallic color with the aforementioned markings in a dull color. The sword itself has no special powers, but with Vergil being able to transfer energy to his weapons, makes the blade always glow with cool-color fire as it is swung.
Devil May Cry
Nelo Angelo uses his sword as a main means of fighting Dante. While having some of attacks similar to Alastor, the sword has its features. For example, blocking attacks with no damage to the sword. Or a covering broad swing, far surpassing Stinger offensive characteristics.
Devil May Cry 3: Special Edition
Vergil is able to turn into Nelo Angelo if Corrupted Vergil costume is selected, by activating Devil Trigger. It is unlocked by completing the game on Hard Mode. The Super Corrupted Vergil costume becomes available by completing the game on Dante Must Die difficulty or beating Bloody Palace mode.
The Devil Trigger form changes the Yamato's and its moveset entirely, replacing it with a Zweihänder. And all the moves become replicas of what Nelo Angelo used in Devil May Cry, while confronting Dante.
Note: None of Nelo Angelo's techniques or movesets have official names.
Appearances in Other Media
The sword is held by Nelo Angelo in the "Nelo Angelo" card (No. NERGIGANTE 004).