Lotus Milestone

Lotus Milestone is an alluded-to character mentioned in a scan in Quarantine Monitor in the Phendrana Drifts in Metroid Prime. This would seem to imply that he lives in the drifts, and has the capability of installing Thardus on patrol in the Phazon Mines.

Scan
"The taming of Thardus continues. Barring unforeseen attacks, it can be installed on Phazon mine patrol by Lotus Milestone."