Mercs can be upgraded by researching here. Each category of Merc will have its own Upgrade cost of Products and Cash. Upgrading them will gain both Defence power and Hit Points.
[[File:MercWorkshop.jpg|400px]]
*Boss Workshop
Bosses can be upgraded by researching here. Each Boss will have their own Upgrade cost of Products and Cash. Upgrading them will gain both Defence power, Attack Power and Hit Points.