I don't know why, but the more I Look at this illustration, the more I think its Nelo Angelo(Vergil).
But, this image is concept artwork, so its not a certainty that the Demon inside will ever be seen in its entirety.
But on looks alone, with no reference points as to what Nelo would look like in this generation of DMC, I can only find horns, which most Demons have that links Nelo to this image as well as colour, but by no means is am I saying for certain that Nelo is the possessor of Nero, I'm saying it just 'maybe' and you have to admit, who ever that Demon is, he looks like a formidable opponent for Dante.
But, this image is concept artwork, so its not a certainty that the Demon inside will ever be seen in its entirety.
But on looks alone, with no reference points as to what Nelo would look like in this generation of DMC, I can only find horns, which most Demons have that links Nelo to this image as well as colour, but by no means is am I saying for certain that Nelo is the possessor of Nero, I'm saying it just 'maybe' and you have to admit, who ever that Demon is, he looks like a formidable opponent for Dante.