* [[Lee Da-hee]] sebagai So Mi-ra<ref>{{cite web|last=Kim|first=Hee-eun|title=Lee Da-hee finally gets lead role|url=http://koreajoongangdaily.joins.com/news/article/Article.aspx?aid=2985687|work=Korea JoongAng Daily|accessdate=|date=}}</ref><ref>{{cite web|last=Jung|first=Jin-young|title=Lee Da Hee Says Choi Daniel Wanted to Shoot Kiss Scene Like Pitt-Jolie|url=http://mwave.interest.me/enewsworld/en/article/64701/leedahae-talks-about-kiss-scene-with-choidaniel|work=enewsWorld|accessdate=|date=}}</ref>
* [[Jung So-min]] sebagai Kang Jin-ah
* [[Jung So-min]] sebagai Kang Jin-ah<ref>{{cite web|last=Jeon|first=Ah-ram|title=Jung So Min to Chase After Kang Ji Hwan on ''Big Man''|url=http://mwave.interest.me/enewsworld/en/article/59136/jungsomin-to-make-return-to-dramaland|work=enewsWorld|accessdate=|date=}}</ref><ref>{{cite web|last=Kim|first=Hee-eun|title=''Big Man'' main stars confirmed|url=http://koreajoongangdaily.joins.com/news/article/Article.aspx?aid=2985240|work=Korea JoongAng Daily|accessdate=|date=}}</ref>
