User blog comment:Argorrath/Black Ops III - Reveal Trailer released/@comment-3967954-20150426175204/@comment-3967954-20150426185308

Well, this article from the Guardian mentions the names Donnie Walsh, Zhen Zhen, Alessandro Castillo and "Reaper", a cyborg. No mention of any Masons, but I wouldn't rule it out just yet. But the descriptions of the characters in the article matches the appearances of the characters seen in the trailer.

http://www.theguardian.com/technology/2015/apr/26/call-of-duty-black-ops-3-co-op-campaign-movement-announcement