Masato Koyama

Masato Koyama was a system programmer at Pytheas during Prey: Mooncrash.

Mooncrash
Peter finds Koyama's corpse just past the Typhon Gate leading to the shuttle in the Crew Annex. He was killed by a Mimic when one shorted out the gate. Masato Koyama carries a keycard to Habitation Pods 17-24, and other random loot.