This is an extraterrestrial race known as the Dicekin, designed in collaboration with Shawngerlin for the TRPG "Kill Squad."
The most distinctive feature of this race is their six arms, composed of pure dice ore. Their internal organ region serves a biomechanical purpose, and when injured, it reverts to its original crystalline form of dice ore. If a damaged area is too severely compromised, it may disintegrate.
Due to their significantly long lifespans, the individuals often develop differences driven by self-indulgence and libertarianism, leading to frequent disagreements. These disputes are often settled through various combat competitions to mediate conflicts among the different clans.