Each of these contain a skin(which replaces Agent). 7z archive, and click through until you see 12 different named folders. Installation guide for those who haven't modded RE6 before: Agent becomes almost entirely invisible(save for a few floating parts) in Campaign if this mod is active. This is because this mod is basically Agent's head on a retextured Chris body. If playing in Duo, and your partner is Chris, the vest will change into Chris' green vest.
As promised, here's a video showing off all of the skins included in the HUNK Skin Pack by Codename Hunk on the RE Modding forums(I used the RE4 HUNK skin in my Rooftop Mission run earlier)! Download the mod here: