User blog comment:Miskos3/Chapter 56, Review/@comment-71.174.253.115-20140407162523/@comment-10733658-20140408090244

"Remember that Mikasa is a "refugee from the east". But most likely she had something to do with the Ackerman guy before she ended up at Eren's family. Maybe he tried to train orphans into killers?"

Methinks someone needs to go re-read Mikasa's backstory, since none of that is true. She went from living with her parents, to kidnapped, to adopted by the Yeager family over the couse of a few hours. Her mother was mentioned to be a pureblooded Asian, possibly one of the last ones remaining within the Walls. Her mother mentioned a "mark" passed down through her clan over the generations, but it doesn't make sense for Ackerman to have been her surname. While it is possible, it makes more sense for a Western-sounding surname to have been the husband's name, as opposed to the wife's maiden name.