ガチムチ/がちむち. A Japanese term that
literally means "muscular chubby," which refers to big, bulky body types that
are very muscular, but also have a good amount of fat.
Jiraiya, Go Fujimoto, and Ebisubashi Seizoh are just a few of the many bara manga artists who specialize
in gachimuchi characters.
bodybuilders tend to have gachimuchi body types.