heheheh, this monster metabolism is kinda like the Kran, but with the difference that they excret unnesesary sustances as vapor, and trought especific pores, the thing is this creature absorbs some of the minerals of the crystal to suport their bone growt and all other funtions, but they dont consume nothing similar to a protein, so their muscules dont develop much, and yet(as the crystals are known as energy sources in this game) they consume the energy of the crystal to be able to function, kinda like a calory, and as they consume moustly the other minerals of the crystal, their skin becomes harder, as for the small outher shell of \"blood crystals\" is caused because the excreted gas, and the crystals locate just right in the excreting pores,so they start blocking their own capability to expulse the unnutritibe sustances trought time, and some times they become little presion bombs, and others learn to use that presion in various ways, but theyll die eventualy for theyr own self-poisonig(they last aruond 4 to 8 years, but some exeptions[4%]can live to 20 years), so the tribe of this creatures are carefull about eating more than nessesary, and the oldest already have an imbresive blood crystal shell, but this \"exiled\" in particular does not eat much, so they dont start to block pores and withhold presion, also create blood crystal in reallly small amounts, and they cant take avantage of the presion usage tecnices of his tribe, and the crystal shell they produce.....ahh, also this monster is exiled wen the tribe find him usseles, or is there was an insurrection against the dominant male, all involved should be exiled, and that is worst than a death sentence for them....also they use this exiles to get hunters away from their lairs, and to control population among themselfs..(heheh ^__^)(ahh, as a personal note, this society is similar to cappuchin monkeys,also their intelect)