Editing Gene-seed (section)

==== Salamanders (XVIII Legion) ====
{{Main|Salamanders}}
* Unique Melanchromic Organ, causing their skin to turn pitch black (so much so that it looks genuinely unnatural) instead of waiting for radiation to happen to fix it.
* Unique Occulobe, causing limited ability to see infrared emissions, referred to as "fire-sight". While not as potent as what an Auspex scanner would be capable of, it can be combined with specialized materials within armor and standards to produce decorations and tactical markings that only the Salamanders can see. This also gives them glowing red eyes, Which makes sense.
* Possibly altered Mucranoid - high degree of heat resistance.
* Possibly altered Biscopea or Lyman's Ear - tend to be somewhat slower moving than other marines, although sometimes it's blamed on the somewhat high gravity on Nocturne or the unusually methodical mindset of it's inhabitants, since they can still run at the same level as any other chapter. (Way back when, they had -1 Initiative.)

While slightly dysfunctional, their gene-seed is pretty stable. Would probably be, like the [[Iron Hands]], a common source of new chapters if not for, again, their extreme decimation during the [[Drop Site Massacre]]. They've since recovered, perhaps a little quicker than the Iron Hands (possibly due to being a little closer to the center and being able to evacuate more marines, As well as still having their Primarch at the time), and while they claimed no official kinship with any successors before the Ultima Founding, there are at least a couple of examples with similar unit markings and tactical dogma.