Mecha

mecha Leobucks

Mecha Leobucks can only be made during the year 4113 up until the war with Hunter ends
Mecha Leobucks have no free will and are controlled by Hunter
All mecha Leobucks are shut down after the war with Hunter
Their free will had been permanently stripped away from them, so shutting them down and finally laying them all to rest was the best option 

Mecha Lycanbucks

Mecha Lycanbucks are made during the year 4119 and after
Mecha Lycanbucks, unlike Leobucks, were not stripped of their conscious and were controlled up until the war with Hunter ended 
Mecha Lycanbucks were freed from being controlled and were able to live after unlike Leobucks

mecha Vulkitbucks

All Vulkitbucks were made after the war with Hunter during the year 4130 so their purpose was less significant
Mecha Vulkitbucks were made for the aesthetic or to be used similarly to 'prosthetic'