Gonzales was a marine for five years untill he got tired of hunting pirates and shooting mock targets. He was offered the job of warden at the Maxiumum Security Detention Facility on Titan.
While more dangerous, the job did have way better pay and it didn't take long for Gonzales to accept the job.
Among the inmates he was known for being ruthless against rapists and pedophiles. More than once did he supply a shiv to a likeminded inmate for them to "clean house".