For too long, genetically modified grown food, and pollution from the ocean and environment created a harmful impact on the natural food chain of Planet Terria. Much of the meat from animals that previously and commonly graced Terrian dinner tables was no longer safe as these animals were fed their own bones and also ate genetically modified plants. Those who consumed any mutant plants and meat, developed incurable diseases that directly destroyed their central nervous system; it was the modern version of Mad Cow Disease from centuries earlier on Planet Earth.
But this time, the population survived, as they understood that eating flesh was fatal, so most Terrians survived on food they grew themselves. The other survivors on Planet Terria were several particularly resistant species of insects as well as some resistant forms of ocean creatures. All life except the Terrians were considered…very, very bad.
Over time, the insects and ocean dwellers mutated in wildly unusual ways and became stronger and more intelligent. Some began to develop brain abnormalities, which resulted in an increased aptitude of 5000% in their IQ’s. As their new intellect grew, so did their appetite for planet domination. They now feel that Terrians are their Public Enemy Number One. So, they developed a secret army and are now ready to eradicate the Terrians with all of their mutant force.