Inflativorus infernum
At the eastern edge of zone J were geysers that releases hot boiling water as well as other compounds such as hydrogen sulfide. I. infernum is a sidodoban that takes advantage of the abundance of hydrogen sulfide as a means to produce energy by oxidizing it.
They will use their flagellas to swim around and finds hydrogen sulfide which, once they come contact with, will absorb it with their microvilli and combine it with oxygen. This reaction produces dihydrogen monoxide(water :p) and elemental sulfur, which they expel. To protect themselves from the high temperature environment, their proteins have a high level of disulfide bonds that prevents them from denaturing. They are eukaryotic, their cell structure containing a nucleus, cell wall, vacuoles, and an organelles that helps them oxidize hydrogen sulfur with a size of around 12micrometers. They reproduce asexually via mitosis in a 40min cycle.