User blog comment:Commdor/Vote for ME3's Female Shepard/@comment-84037-20110725013111/@comment-3399608-20110725031007

No, they only use Mark's face repeatedly for consistency's sake. Shepard is essentially supposed to be you. It would be confusing if they used a different Shepard each time they released a poster or trailer. Hence why they focus mainly on a male (main audience) but Bioware has decided to use the female model.