Alternatively, some believe Dante was completely in the dark, not realising that Vergil's humanity had become personified, or that he doesn't know V and Urizen can still fuse again.
This side also explains why he was so angry when Vergil did show up in person, as V betrayed his trust. Dante also knew that his brother's Yamato can "separate man from devil", so he might've suspected that Urizen has a human counterpart. Did Dante know V was Vergil's human half all along? Some believe he did, explaining his general aversion towards V and why he would let a complete stranger kill Urizen, his brother's demon half, without protest, giving Vergil a chance to make up for his mistakes via his human side.When Dante awakens his Sin Devil Trigger, what was the change for him? Did he overcome the hatred of his demonic heritage and possible resentment toward Vergil for waking his Devil Trigger in 3, or did he fully embrace his demonic heritage rather than simply accepting it? Did Dante accept the demonic power within, or achieve a perfect balance of his humanity and demonic legacy? The scene stands out as the only example of Dante actively taking action to gain greater power, as the previous examples of gaining power in DMC3 and DMC1 were a result of outside factors, being that Vergil forcefully activating his Devil Trigger with Rebellion, and that the awakening of the Devil Sword Sparda only being possible because Nelo Angelo had half of the perfect amulet, as Dante never sought out his father's power, leading to the question if this action was driven by the desire to save Nero.Does he challenge Urizen as revenge for taking his arm? As a way of proving himself to Dante and company? Out of guilt for losing Yamato and enabling a demon invasion? Urizen defeating Dante a month ago suggests he has little chance of winning anyway, so by pressing ahead, is he recklessly overestimating his own power, borderline suicidal, or simply desperate and out of time given the threat Urizen poses? Surprisingly, the game itself almost seems to say yes to all of them, though Nero wanting revenge is portrayed as his initial reason until later on. Others believe that V didn't truly disappear and he's the one taking over the Doppelganger just to make it dance. What can be taken from this interaction? Some fans believe that Vergil's Character Development as V helped bring out the wacky side in him just like his twin brother, but by striking down his Doppelganger after it made a funny dance, he's just keeping his stoic persona intact.
By a similar token, Vergil is sometimes hit with the same interpretations because V is his human half, especially after he returned following the fusion of V and Urizen. His taunts, in particular, have him playing an air violin, conducting an imaginary orchestra, tap dancing, and performing Singing In The Rain. His gameplay shows that the air of mystery he presents himself with hides a much sillier side to him.