The voice of Optimus prime should voice him
Just make the tone demonic
And as for bringing him back , let him come back at max power and stronger than mallet island
Then have Nero fight him at the very end of 6 , beat him but have no way to seal him
Cue dante and Vergil back to do one last jackpot with ebony and ivory, and blue rose for a triple family jackpot scene
End credits and a final finish to the whole sparda arc and mundus
Leaving way for Nero to make his own legacy
Just make the tone demonic
And as for bringing him back , let him come back at max power and stronger than mallet island
Then have Nero fight him at the very end of 6 , beat him but have no way to seal him
Cue dante and Vergil back to do one last jackpot with ebony and ivory, and blue rose for a triple family jackpot scene
End credits and a final finish to the whole sparda arc and mundus
Leaving way for Nero to make his own legacy