The Luminoth J-Fme was one of the ten Keybearers sent to collect the Sky Temple Keys and is called "mighty" by A-Kul. The Warrior was attacked by possessed beasts and machines, while the Ing themselves looked on in safety. J-Fme fell in the Industrial Site of the Temple Grounds. Samus later recovers the key in the Accursed Lake of the Sky Temple Grounds.
- "Mighty J-Fme. In the last, what did you see? Was it one of our gates closing, sealing the scorched land from our holy ground?" —Metroid Prime 2: Echoes Logbook "J-Fme's Key" (Metroid Prime 2: Echoes)
- "Final entry, Warrior J-Fme. Their army swells. Beasts and rogue machines join the ranks of the Horde, all eager to bring death to the Luminoth. The Ing have sent these new additions to the industrial site to do battle with me, while they watched from safety. Cowardly mongrels! My only regret in death is that I did not live to see the day of their defeat. May it come soon!" —Metroid Prime 2: Echoes Logbook "J-Fme's Testament" (Metroid Prime 2: Echoes)