The Hets are a blue jelly-like alien that have the ability to take over a person/alien's brain and learn or take information from them, as well as stun them for 30 seconds. Because of this ability, they can't stay in their host for more than 10 seconds. They have teeth as well, so they can bite onto their enemies. They live on their planet Lucraneon, and some live on the planet's moon, Somerset for training and growing. The Hets have existed ever since the big bang started and lived on Earth as water before moving to Lucraneon. Vegetation makes them stronger and gives them their own calcium. They primarily live on meat, but since vegetation is scarce the Hets created a dome where vegetation is placed and animals like cows and pigs can live there until the Hets eat them (this is done in every city of Lucraneon). The Hets have spent their existence trying to find out how to stay in a host longer than 10 seconds. Hets that breed without needing another Het will produce Sub-Hets, which isn't very common, but not too rare either. Otherwise they will produce regular Hets. Hets can not enter other Hets or Sub-Hets, and Sub-Hets can not take control over Hets or other Sub-Hets. Questions have been raised on how a Het can control a ship since it has no arms, but the Hets have found a way forming together to become a hand.
Formes:
Small forme: The Hets have 3 stages of evolution. Their first form is a form that is puddle shape thing (see image) with a diametre of 2 cm. They are very quick and can swarm up onto a single enemy, much like bees and ants did back in the 21st century. When Hets are born, they will be born in small forme. Small forme Hets are very different from their other formes. No reason has been searched out yet.
Medium forme: Small Hets reach their medium forme in a year and grow up to 15cm in diametre, but instead of their puddle shap they start to expand like a balloon (like Jello). They are a bit slower at this point so they can't swarm on other things like the small formes can. However their teeth grow sharper and can crush rocks. Medium forme Hets lose their tentacles from their small forme stage.
Large forme: A.k.a The Hets. Medium formes also take a year to become a full grown Het. This is the last stage of evolution and grows up to be 30cm, however the leader Het can grows to be about 60cm (This is not definite). Their teeth have grown as tough as diamonds, and can easily crush stuff unexpectedly. Some large forme Hets are known to give frost bite, and others are known to inject venom. They regain their speed lost from medium forme, but they are still not as fast as their small forme. Large forme Hets can combine together to become a big Het for attacking/defending purposes.