Khurasan Miniatures have posted preview photos and details of their upcoming 15mm Legged Heavy Assault Cyborg walker unit.
From their website:
The heavy land asset of the Federal Marine Corp. is the Legged Heavy Assault Cyborg, or L-HAC, pronounced “el-hack.” An 11-metre tall chassis made of stabilized osmium, the L-HAC has the brain and spinal column of a deceased Marine veteran installed permanently in a life support chamber deep in the citadel of its chassis. To qualify for installation, during his full-body lifetime the marine is required to have given at least 20 years of continuous and meritorious service, to have been cited for outstanding performance at least 10 times, and to have undergone stringent mental examination to establish his emotional stability and eliminate candidates with any tendencies toward megalomania.
Marine volunteers who meet all these qualifications and sign a waiver may be installed if they have suffered bodily injury too great to continue to function as a full-body serviceman but possess a sufficiently-intact brain and spinal column for installation, provided of course that an L-HAC chassis is available.