So. I notice Chronos almost always uses zoanoid agents or thugs to beat on the guyvers. 

 

Wouldn't it be just easier to have a sniper sit on a rooftop and shoot Sho or Agito while they're in human form?.....or slip them some poison at a restaurant...or... slit their throats in their sleep? 

 

Something like that. I mean, there are other ways to kill them without directly engaging them. You figured fail after fail....they'd try something new.

Well, if you kill Sho or Agito as humas, then the control metal would forever be lost... They have to take them on as Guyvers if they have any chance of obtaining their power.

They do, depends on what version of Guyver you're on about.