"Long ago, the Fistin species was one big species wielding many different powers. Then an unknown event caused the species to split into 7 tribes, each wielding a single power."
Behold: the Fistin Species!
Now for the individual members. First off, there's the Fire Fists, who are unique even among the Fistin Species. Most Fistin sub-species are simply fighters, but the Fire Fists actively protect harmless Animals from the powerful predator species of the world. They can absorb energy from fire.
Fire Fists tend to travel alone or in packs of three and are very rarely seen alone; they are usually travelling with a herd of other animals.
Also, back coverage. It's present on all these MOC's
The Ice Fists can control the flow of heat into and out of their bodies. They also gain sustenance from water.
The Water fists can breath underwater and also gain sustenance from water.
The Stone fists eat dirt and are extremely fast.
Acid fists are the only ones that actually eat like normal animals. Their skin secretes a powerful acid that they use for killing prey.
Lightning fists gain energy from electricity (duh). They can also shock other through direct contact.
Iron Fists are an anomaly among living things. They are born with flesh and bone, but by the time they reach maturity their bodies are fully Iron. They have no need for sustenance or oxygen, but they do give girth to young and die. Scientists are still puzzling over how this is possible.
Finally, there is the Crystal Fist. Only one Crystal fist is known to exist, and no one is quite sure if it is part of the Fistin Species or not; while it has some of their powers, it lacks fists. It travels around destroying anything in its path, and now a special military force has formed in an effort to stop the creature.
(yes, the MOC is very simple. I did this because I wanted the Crystal fist to appear young and childish. However, I did make an "ultra-powered" version that may play a role in the story)
Here it is in the stereotypical Fistin pose:
And finally, the poster I made for my story:
Bonus Blooper picture: domino Fistini
Feel free to ask me any questions about the Fistin Species; I'm trying to create a full species biography for these guys. Anything you can think of, fire away.