Eve of Extinction (Monster Transformations)

Thanks again to Andréssaurio Rex for this recommendation. This graphic novel involves a virus that transforms men (and only men) into hideous parasitical monsters. Three males are shown transforming. The first is Eddie, husband of one of the heroines:

Next is Taylor, boyfriend of one of the younger women:

Last is James, the nasty ex-boyfriend. He goes through multiple stages, though we don't see the transformations between several of them (his shirt also changes color between issues).  

 

After eating and absorbing another monsters he grows even more monstrous and yucky: