Experiment 7526 was an unsuccessful attempt at converting a Space Pirate into an Elite Pirate. Its remains can be seen inside a tall, indestructible Xenome Containment Unit in the Research Lab Aether room of the Phendrana Drifts, in Metroid Prime. What happened to its remains after the Glacier One lab was shut down by Samus Aran is unknown. Interestingly, it resembles a Zebesian moreso than any other Pirate on Tallon IV, appearing nearly identical to some otherwise unused concept art. It also resembles ULF 74.

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"This tank holds the remains of experiment 7526. Conversion of Elite Pirate unsuccessful."