emaciated
adjective
emaciated bodies: thin, skeletal, bony, gaunt, wasted; scrawny, skinny, scraggy, skin and bones, rawboned, sticklike, waiflike; starved, underfed, undernourished, underweight, half-starved; cadaverous, shriveled, shrunken, withered; informal anorexic, like a bag of bones.
Lord Zero looks like a bag of bones.