Planet Eater

In a distant future mankind the Earth is shattered War and Famine have broken the planet into nothing more than a hollow and almost dead star 3015
,in a desperate attempt the government all banded together to gather all their brightest mind and decided that space is the only chance for survival for 400 years they were on the solar system with a space city "El dorado".
in the year 3415 they were being approached by an alien lifeform called "Ral"
Now that they found out that they were NEVER ALONE
Millions of sentient lifeform are there
with a symbiosis with one of the lifeforms they actually be able to change their bodies to live and breathe in space in the harsh terrain in other planets.

The sentient lifeform was a insect like creature who could live through the space and adapt to their surrounding by changing the host body mutating them fast and efficient,this insect was called the "Ral"
it is sentient by itself but somehow unable to live without a symbiosis because this this lifeform was a energy eater it eats everything around the host body while maximizing the physical and psych

Almost every lifeform use "Ral" for their adapting ability are so enhanced,and every "Ral" is different
with each of their own "basic" ability