Xlanthi

The Xlanthi were humanoid lizards from Xlanthius.

Xlanthi were humanoid lizards with crests. They had large claws on their hands and feet. They were superhumanly strong and had armoured hide. Infant Xlanthi were trained from birth in unarmed combat techniques.

Xlanthi were master weaponsmiths, and they traded their armaments for one-man warships. Xlanthi could hunt fugitives within Earthspace without recrimination. The Pakhar court also worked with the Xlanthi in return for contract hits. (PROSE: Beige Planet Mars)

A group of Xlanthi warriors time travelled to Earth in 2019 and became involved in the Henley Picnic Massacre. (PROSE: Excalibur of Mars)

Sociology
Xlanthi considered the following to be a violation of law and punishable by a brutal death:

The correct response under law if someone offended a Xlanthi (if he had the time) was to strip down to his underwear and then demand in Old High Xlanthi to exercise his right to an honour duel, unarmed and to the death, with as many Xlanthi as they thought were hard enough. This course of action was generally not recommended. (PROSE: Beige Planet Mars)