Phlogus

A Phlogus is (presumably) a creature on Aether. None are encountered in Metroid Prime 2: Echoes, although its Darkling counterpart is seen twice.

Evidence suggests that a light Phlogus was planned for inclusion in the game at some point. Two Logbook models are associated with the scan file of the Dark Phlogus: the normal Dark Phlogus, and an untextured model with more spikes. The text associated with this scan only refers to it as "Phlogus" without any indication of it being a Darkling. This indicates that a light Phlogus was planned for inclusion, but scrapped. It may have been removed for being too similar to the dark version, or there was no suitable location for it.