Jim Peyton is the main protagonist of Lost Planet 3, and is a new arrival on E.D.N. III. He crash lands on E.D.N. III with Dr. Kendrick Kovac later to be saved by his rival contractor Renard LaRoche. At some point, as the story of the game progresses, Jim gets captured by snow pirates led by Souichi who plans to execute him. Mira begs her father not to. As the story progresses Jim slowly discovers some dark secrets and learns the truth about NEVEC.
Jim Peyton was born on Earth Its unknown exactly where he was born and what his childhood was like. Known knowledge is that he was both an engineer, miner and a soldier. At some point in his life he met his wife, Grace Peyton who had their child Hank Peyton. Jim Peyton later signed up and was cleared to work on a mining operation on the planet E.D.N. III.
Jim Peyton is a miner who agreed to work on the planet E.D.N. III in exchange for greater pay. He is first seen on a large ship that left Earth, heading towards E.D.N. III which shoots out a pod that contains Jim and Dr.kendrick Kovac along with his rig.
Jim and his grand-daughter Diana Peyton are stuck under rocks and wreckage, Diana tries to help her grandfather but it is in vain, as the rubble is too heavy to be lifted off of Jim's prosthetic leg. Jim tells her that he deserves this and tells her of his life on E.D.N III, and how it all led into him destroying Nushi and almost annihilating the humanity on E.D.N III. Jim apologizes to Diana, being sorry that she was born into such a life of hardships and conflict, rather than peace, soon asking her to forgive him for his mistake. After his death, his old friend Renard LaRoche blasts through some rocks, and after confirming Jim's death, comments that "if anyone's earned peace at last, it's him", followed by a good bye, as well as commenting that Jim didn't need to worry, for he had taught his grand-daughter well.
Jim left behind his son and Grand daughter. His story ends here.
- Bill Watterson also did Jim's motion capture.
- After killing Isenberg, he gets a prosthetic leg.
- Jim starts Lost Planet 3 at age 32-Mid 60's.
- Despite working as a miner, he is hinted to have a decent level of military training.