User blog comment:Zathronas/Analysis by an Author: Volume 2 Trailer/@comment-2006510-20140707181156

Nice to see another writer out there XD

As for the unknown man, he may be named Ironwood, according to Monty's fairly-recent twitter about who's-voicing-whom. But regardless, my personal theory is that he's Weiss's father.

Why? At the robot unveiling scene, where a hologram of himself resides over, the newer robots literally step and 'crush' the older versions... the latter looking virtually identical to the ones on the train in the Black trailer - which is also confirmed to have been carrying Schnee company Dust ;)