Lorelei of the Red Mist by Leigh Brackett and Ray Bradbury

The metal of the collar was soft. When it was cut through Starke got his fingers under it and bent the ends outward, without trouble. His old body could never have done that. His old body could never have done a lot of things. He figured Rann hadn’t cheated him. Not much.

Out of the Iron Womb! by Poul Anderson

It was as if someone else had seized Bo’s body. Decision was like lightning through him. He had tried to capture Lundgard, and failed, and venom crouched at his back. But the ship was pointed for the asteroid now, where it hung gloomily a dozen miles off, and the rockets were ready to spew.

Defense Mech by Ray Bradbury

It can’t be, but it is. Tony, who died ten long years ago, when I was a freckled kid! Alive and selling popcorn again. Oh, Tony, it’s good to see you. His black moustache’s so waxed, so shining, his dark hair like burnt oily shavings, his dark shining happy eyes, his smiling red cheeks! He shimmers in my eyes like in a cold rain. Tony! Let me shake your hand! Gimme a bag of popcorn, senor!