If Ves ignored her giant sword and her exobeast clothes, Mayra looked and spoke no different from a genuine Journeyman Mech Designer. However, Ves simply couldn't ignore what her veneer of civility covered up. She was not only a daughter of the frontier, she also learned her craft from a mech designer that earned the rare privilege of earning a bounty on his head from the MTA!
A Senior Mech Designer ordinarily wouldn't be kicked from their membership rolls even if they had some blood on their hands. They were mostly content to leave law enforcement in the hands of the states.
Only a couple of exceptions roused them into action. One of them would be to break one of the taboos. Another one would be to violate the tenets of mech design.
Skull Architect Jimenez was guilty of the latter.
Whatever depraved theory he came up with in his fruitless search for the X-Factor compelled him to make use of human remains.