The Guyborgs (ガイボーグ?), further upgraded into Fangs Gaibōgu (ファング?) are a group of modified humans created by FanguToho that first appear in the 1996 tokusatsu kaiju series, Seven Star Fighting God Guyferd.
Guyborgs are physically (and often mentally) altered humans with many mechanical augmentations, with Guyferd being a notable example. They form the default group of security guards for the Crown organization. No ordinary human can survive the surgery necessary to become one, so each Guyborg was at one point in their life a martial artist or athlete. They are planned to be used by the Crown organization for world conquest.
The Guyborgs are eventually upgraded into Fangs. The Fangs are more sophisticated Fighters than the Guyborgs, and have strength ten times that of a human. Their role is upgraded from basic foot soldiers, to a kind of Task force sent out on specific high-risk missions instead of doing all of the grunt work.