I was browsing Velvet Hammer's instagram lately, and found a photo with the founder David Beno, someone from System of a Down and a manager named...Mark Wakefield. Link: https://www.instagram.com/p/dfoH2uoS8u/ I am sure this is Mark Wakefield, the former singer of Linkin Park, as it is known that he works at Velvet Hammer Management. Also there is another photo of him in David Beno's instagram at a Linkin Park concert with AFI, so I am confident it is him. Mark's is in a few photos from the instagram. A bit out of place I know, but there were not any photos of the guy, but this might be it. He definitely looks similar to how he looked in the Xero group photo.