Then why not admit he is Trask? Trask isn't a shocking character that needs to be teased. Who knows then it could be a made up character like in the case of John Harrison. I wouldn't put it past Singer to go that route. I guess he could pick some obscure character like he did with Stryker. Someone mentioned Stephen Lang, who was involved in the sentinel project. Until, we get an official announcement, I won't assume anything.