Bacteroides

Bacteroides (バクテロイデス) is a group of characters in Bacteria at Work. They are opportunistic bacteria and may change side between good bacteria and bad bacteria.

Real-life counterpart
It is a genus of Gram-negative, obligate anaerobic bacteria. Bacteroides species are nonendospore-forming bacilli, and may be either motile or nonmotile, depending on the species. The DNA base composition is 40–48% GC. Unusual in bacterial organisms, Bacteroides membranes contain sphingolipids. They also contain meso-diaminopimelic acid in their peptidoglycan layer.